diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches/CVE-2022-30522.patch | 561 |
1 files changed, 561 insertions, 0 deletions
diff --git a/debian/patches/CVE-2022-30522.patch b/debian/patches/CVE-2022-30522.patch new file mode 100644 index 0000000..5ad124e --- /dev/null +++ b/debian/patches/CVE-2022-30522.patch @@ -0,0 +1,561 @@ +From db47781128e42bd49f55076665b3f6ca4e2bc5e2 Mon Sep 17 00:00:00 2001 +From: Eric Covener <covener@apache.org> +Date: Wed, 1 Jun 2022 12:50:40 +0000 +Subject: [PATCH] Merge r1901506 from trunk: + +limit mod_sed memory use + +Resync mod_sed.c with trunk due to merge conflicts. + + +git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1901509 13f79535-47bb-0310-9956-ffa450edef68 +Origin: https://github.com/apache/httpd/commit/db47781128e42bd49f55076665b3f6ca4e2bc5e2 +--- + modules/filters/mod_sed.c | 75 ++++++++---------- + modules/filters/sed1.c | 158 +++++++++++++++++++++++++++----------- + 2 files changed, 147 insertions(+), 86 deletions(-) + +diff --git a/modules/filters/mod_sed.c b/modules/filters/mod_sed.c +index 4bdb4ce33a..12cb04a20f 100644 +--- a/modules/filters/mod_sed.c ++++ b/modules/filters/mod_sed.c +@@ -59,7 +59,7 @@ typedef struct sed_filter_ctxt + module AP_MODULE_DECLARE_DATA sed_module; + + /* This function will be call back from libsed functions if there is any error +- * happend during execution of sed scripts ++ * happened during execution of sed scripts + */ + static apr_status_t log_sed_errf(void *data, const char *error) + { +@@ -277,7 +277,7 @@ static apr_status_t sed_response_filter(ap_filter_t *f, + apr_bucket_brigade *bb) + { + apr_bucket *b; +- apr_status_t status; ++ apr_status_t status = APR_SUCCESS; + sed_config *cfg = ap_get_module_config(f->r->per_dir_config, + &sed_module); + sed_filter_ctxt *ctx = f->ctx; +@@ -302,9 +302,9 @@ static apr_status_t sed_response_filter(ap_filter_t *f, + return status; + ctx = f->ctx; + apr_table_unset(f->r->headers_out, "Content-Length"); +- } + +- ctx->bb = apr_brigade_create(f->r->pool, f->c->bucket_alloc); ++ ctx->bb = apr_brigade_create(f->r->pool, f->c->bucket_alloc); ++ } + + /* Here is the main logic. Iterate through all the buckets, read the + * content of the bucket, call sed_eval_buffer on the data. +@@ -326,63 +326,52 @@ static apr_status_t sed_response_filter(ap_filter_t *f, + * in sed's internal buffer which can't be flushed until new line + * character is arrived. + */ +- for (b = APR_BRIGADE_FIRST(bb); b != APR_BRIGADE_SENTINEL(bb);) { +- const char *buf = NULL; +- apr_size_t bytes = 0; ++ while (!APR_BRIGADE_EMPTY(bb)) { ++ b = APR_BRIGADE_FIRST(bb); + if (APR_BUCKET_IS_EOS(b)) { +- apr_bucket *b1 = APR_BUCKET_NEXT(b); + /* Now clean up the internal sed buffer */ + sed_finalize_eval(&ctx->eval, ctx); + status = flush_output_buffer(ctx); + if (status != APR_SUCCESS) { +- clear_ctxpool(ctx); +- return status; ++ break; + } ++ /* Move the eos bucket to ctx->bb brigade */ + APR_BUCKET_REMOVE(b); +- /* Insert the eos bucket to ctx->bb brigade */ + APR_BRIGADE_INSERT_TAIL(ctx->bb, b); +- b = b1; + } + else if (APR_BUCKET_IS_FLUSH(b)) { +- apr_bucket *b1 = APR_BUCKET_NEXT(b); +- APR_BUCKET_REMOVE(b); + status = flush_output_buffer(ctx); + if (status != APR_SUCCESS) { +- clear_ctxpool(ctx); +- return status; ++ break; + } ++ /* Move the flush bucket to ctx->bb brigade */ ++ APR_BUCKET_REMOVE(b); + APR_BRIGADE_INSERT_TAIL(ctx->bb, b); +- b = b1; +- } +- else if (APR_BUCKET_IS_METADATA(b)) { +- b = APR_BUCKET_NEXT(b); + } +- else if (apr_bucket_read(b, &buf, &bytes, APR_BLOCK_READ) +- == APR_SUCCESS) { +- apr_bucket *b1 = APR_BUCKET_NEXT(b); +- status = sed_eval_buffer(&ctx->eval, buf, bytes, ctx); +- if (status != APR_SUCCESS) { +- clear_ctxpool(ctx); +- return status; ++ else { ++ if (!APR_BUCKET_IS_METADATA(b)) { ++ const char *buf = NULL; ++ apr_size_t bytes = 0; ++ ++ status = apr_bucket_read(b, &buf, &bytes, APR_BLOCK_READ); ++ if (status == APR_SUCCESS) { ++ status = sed_eval_buffer(&ctx->eval, buf, bytes, ctx); ++ } ++ if (status != APR_SUCCESS) { ++ ap_log_rerror(APLOG_MARK, APLOG_ERR, status, f->r, APLOGNO(10394) "error evaluating sed on output"); ++ break; ++ } + } +- APR_BUCKET_REMOVE(b); + apr_bucket_delete(b); +- b = b1; +- } +- else { +- apr_bucket *b1 = APR_BUCKET_NEXT(b); +- APR_BUCKET_REMOVE(b); +- b = b1; + } + } +- apr_brigade_cleanup(bb); +- status = flush_output_buffer(ctx); +- if (status != APR_SUCCESS) { +- clear_ctxpool(ctx); +- return status; ++ if (status == APR_SUCCESS) { ++ status = flush_output_buffer(ctx); + } + if (!APR_BRIGADE_EMPTY(ctx->bb)) { +- status = ap_pass_brigade(f->next, ctx->bb); ++ if (status == APR_SUCCESS) { ++ status = ap_pass_brigade(f->next, ctx->bb); ++ } + apr_brigade_cleanup(ctx->bb); + } + clear_ctxpool(ctx); +@@ -433,7 +422,7 @@ static apr_status_t sed_request_filter(ap_filter_t *f, + * the buckets in bbinp and read the data from buckets and invoke + * sed_eval_buffer on the data. libsed will generate its output using + * sed_write_output which will add data in ctx->bb. Do it until it have +- * atleast one bucket in ctx->bb. At the end of data eos bucket ++ * at least one bucket in ctx->bb. At the end of data eos bucket + * should be there. + * + * Once eos bucket is seen, then invoke sed_finalize_eval to clear the +@@ -475,8 +464,10 @@ static apr_status_t sed_request_filter(ap_filter_t *f, + if (apr_bucket_read(b, &buf, &bytes, APR_BLOCK_READ) + == APR_SUCCESS) { + status = sed_eval_buffer(&ctx->eval, buf, bytes, ctx); +- if (status != APR_SUCCESS) ++ if (status != APR_SUCCESS) { ++ ap_log_rerror(APLOG_MARK, APLOG_ERR, status, f->r, APLOGNO(10395) "error evaluating sed on input"); + return status; ++ } + flush_output_buffer(ctx); + } + } +diff --git a/modules/filters/sed1.c b/modules/filters/sed1.c +index 67a8d06515..047f49ba13 100644 +--- a/modules/filters/sed1.c ++++ b/modules/filters/sed1.c +@@ -87,18 +87,20 @@ static void eval_errf(sed_eval_t *eval, const char *fmt, ...) + } + + #define INIT_BUF_SIZE 1024 ++#define MAX_BUF_SIZE 1024*8192 + + /* + * grow_buffer + */ +-static void grow_buffer(apr_pool_t *pool, char **buffer, ++static apr_status_t grow_buffer(apr_pool_t *pool, char **buffer, + char **spend, apr_size_t *cursize, + apr_size_t newsize) + { + char* newbuffer = NULL; + apr_size_t spendsize = 0; +- if (*cursize >= newsize) +- return; ++ if (*cursize >= newsize) { ++ return APR_SUCCESS; ++ } + /* Avoid number of times realloc is called. It could cause huge memory + * requirement if line size is huge e.g 2 MB */ + if (newsize < *cursize * 2) { +@@ -107,6 +109,9 @@ static void grow_buffer(apr_pool_t *pool, char **buffer, + + /* Align it to 4 KB boundary */ + newsize = (newsize + ((1 << 12) - 1)) & ~((1 << 12) - 1); ++ if (newsize > MAX_BUF_SIZE) { ++ return APR_ENOMEM; ++ } + newbuffer = apr_pcalloc(pool, newsize); + if (*spend && *buffer && (*cursize > 0)) { + spendsize = *spend - *buffer; +@@ -119,63 +124,77 @@ static void grow_buffer(apr_pool_t *pool, char **buffer, + if (spend != buffer) { + *spend = *buffer + spendsize; + } ++ return APR_SUCCESS; + } + + /* + * grow_line_buffer + */ +-static void grow_line_buffer(sed_eval_t *eval, apr_size_t newsize) ++static apr_status_t grow_line_buffer(sed_eval_t *eval, apr_size_t newsize) + { +- grow_buffer(eval->pool, &eval->linebuf, &eval->lspend, ++ return grow_buffer(eval->pool, &eval->linebuf, &eval->lspend, + &eval->lsize, newsize); + } + + /* + * grow_hold_buffer + */ +-static void grow_hold_buffer(sed_eval_t *eval, apr_size_t newsize) ++static apr_status_t grow_hold_buffer(sed_eval_t *eval, apr_size_t newsize) + { +- grow_buffer(eval->pool, &eval->holdbuf, &eval->hspend, ++ return grow_buffer(eval->pool, &eval->holdbuf, &eval->hspend, + &eval->hsize, newsize); + } + + /* + * grow_gen_buffer + */ +-static void grow_gen_buffer(sed_eval_t *eval, apr_size_t newsize, ++static apr_status_t grow_gen_buffer(sed_eval_t *eval, apr_size_t newsize, + char **gspend) + { ++ apr_status_t rc = 0; + if (gspend == NULL) { + gspend = &eval->genbuf; + } +- grow_buffer(eval->pool, &eval->genbuf, gspend, +- &eval->gsize, newsize); +- eval->lcomend = &eval->genbuf[71]; ++ rc = grow_buffer(eval->pool, &eval->genbuf, gspend, ++ &eval->gsize, newsize); ++ if (rc == APR_SUCCESS) { ++ eval->lcomend = &eval->genbuf[71]; ++ } ++ return rc; + } + + /* + * appendmem_to_linebuf + */ +-static void appendmem_to_linebuf(sed_eval_t *eval, const char* sz, apr_size_t len) ++static apr_status_t appendmem_to_linebuf(sed_eval_t *eval, const char* sz, apr_size_t len) + { ++ apr_status_t rc = 0; + apr_size_t reqsize = (eval->lspend - eval->linebuf) + len; + if (eval->lsize < reqsize) { +- grow_line_buffer(eval, reqsize); ++ rc = grow_line_buffer(eval, reqsize); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + } + memcpy(eval->lspend, sz, len); + eval->lspend += len; ++ return APR_SUCCESS; + } + + /* + * append_to_linebuf + */ +-static void append_to_linebuf(sed_eval_t *eval, const char* sz, ++static apr_status_t append_to_linebuf(sed_eval_t *eval, const char* sz, + step_vars_storage *step_vars) + { + apr_size_t len = strlen(sz); + char *old_linebuf = eval->linebuf; ++ apr_status_t rc = 0; + /* Copy string including null character */ +- appendmem_to_linebuf(eval, sz, len + 1); ++ rc = appendmem_to_linebuf(eval, sz, len + 1); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + --eval->lspend; /* lspend will now point to NULL character */ + /* Sync step_vars after a possible linebuf expansion */ + if (step_vars && old_linebuf != eval->linebuf) { +@@ -189,68 +208,84 @@ static void append_to_linebuf(sed_eval_t *eval, const char* sz, + step_vars->locs = step_vars->locs - old_linebuf + eval->linebuf; + } + } ++ return APR_SUCCESS; + } + + /* + * copy_to_linebuf + */ +-static void copy_to_linebuf(sed_eval_t *eval, const char* sz, ++static apr_status_t copy_to_linebuf(sed_eval_t *eval, const char* sz, + step_vars_storage *step_vars) + { + eval->lspend = eval->linebuf; +- append_to_linebuf(eval, sz, step_vars); ++ return append_to_linebuf(eval, sz, step_vars); + } + + /* + * append_to_holdbuf + */ +-static void append_to_holdbuf(sed_eval_t *eval, const char* sz) ++static apr_status_t append_to_holdbuf(sed_eval_t *eval, const char* sz) + { + apr_size_t len = strlen(sz); + apr_size_t reqsize = (eval->hspend - eval->holdbuf) + len + 1; ++ apr_status_t rc = 0; + if (eval->hsize <= reqsize) { +- grow_hold_buffer(eval, reqsize); ++ rc = grow_hold_buffer(eval, reqsize); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + } + memcpy(eval->hspend, sz, len + 1); + /* hspend will now point to NULL character */ + eval->hspend += len; ++ return APR_SUCCESS; + } + + /* + * copy_to_holdbuf + */ +-static void copy_to_holdbuf(sed_eval_t *eval, const char* sz) ++static apr_status_t copy_to_holdbuf(sed_eval_t *eval, const char* sz) + { + eval->hspend = eval->holdbuf; +- append_to_holdbuf(eval, sz); ++ return append_to_holdbuf(eval, sz); + } + + /* + * append_to_genbuf + */ +-static void append_to_genbuf(sed_eval_t *eval, const char* sz, char **gspend) ++static apr_status_t append_to_genbuf(sed_eval_t *eval, const char* sz, char **gspend) + { + apr_size_t len = strlen(sz); + apr_size_t reqsize = (*gspend - eval->genbuf) + len + 1; ++ apr_status_t rc = 0; + if (eval->gsize < reqsize) { +- grow_gen_buffer(eval, reqsize, gspend); ++ rc = grow_gen_buffer(eval, reqsize, gspend); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + } + memcpy(*gspend, sz, len + 1); + /* *gspend will now point to NULL character */ + *gspend += len; ++ return APR_SUCCESS; + } + + /* + * copy_to_genbuf + */ +-static void copy_to_genbuf(sed_eval_t *eval, const char* sz) ++static apr_status_t copy_to_genbuf(sed_eval_t *eval, const char* sz) + { + apr_size_t len = strlen(sz); + apr_size_t reqsize = len + 1; ++ apr_status_t rc = APR_SUCCESS;; + if (eval->gsize < reqsize) { +- grow_gen_buffer(eval, reqsize, NULL); ++ rc = grow_gen_buffer(eval, reqsize, NULL); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + } + memcpy(eval->genbuf, sz, len + 1); ++ return rc; + } + + /* +@@ -397,6 +432,7 @@ apr_status_t sed_eval_buffer(sed_eval_t *eval, const char *buf, apr_size_t bufsz + } + + while (bufsz) { ++ apr_status_t rc = 0; + char *n; + apr_size_t llen; + +@@ -411,7 +447,10 @@ apr_status_t sed_eval_buffer(sed_eval_t *eval, const char *buf, apr_size_t bufsz + break; + } + +- appendmem_to_linebuf(eval, buf, llen + 1); ++ rc = appendmem_to_linebuf(eval, buf, llen + 1); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + --eval->lspend; + /* replace new line character with NULL */ + *eval->lspend = '\0'; +@@ -426,7 +465,10 @@ apr_status_t sed_eval_buffer(sed_eval_t *eval, const char *buf, apr_size_t bufsz + + /* Save the leftovers for later */ + if (bufsz) { +- appendmem_to_linebuf(eval, buf, bufsz); ++ apr_status_t rc = appendmem_to_linebuf(eval, buf, bufsz); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + } + + return APR_SUCCESS; +@@ -448,6 +490,7 @@ apr_status_t sed_finalize_eval(sed_eval_t *eval, void *fout) + /* Process leftovers */ + if (eval->lspend > eval->linebuf) { + apr_status_t rv; ++ apr_status_t rc = 0; + + if (eval->lreadyflag) { + eval->lreadyflag = 0; +@@ -457,7 +500,10 @@ apr_status_t sed_finalize_eval(sed_eval_t *eval, void *fout) + * buffer is not a newline. + */ + /* Assure space for NULL */ +- append_to_linebuf(eval, "", NULL); ++ rc = append_to_linebuf(eval, "", NULL); ++ if (rc != APR_SUCCESS) { ++ return rc; ++ } + } + + *eval->lspend = '\0'; +@@ -655,11 +701,15 @@ static apr_status_t dosub(sed_eval_t *eval, char *rhsbuf, int n, + sp = eval->genbuf; + rp = rhsbuf; + sp = place(eval, sp, lp, step_vars->loc1); ++ if (sp == NULL) { ++ return APR_EGENERAL; ++ } + while ((c = *rp++) != 0) { + if (c == '&') { + sp = place(eval, sp, step_vars->loc1, step_vars->loc2); +- if (sp == NULL) ++ if (sp == NULL) { + return APR_EGENERAL; ++ } + } + else if (c == '\\') { + c = *rp++; +@@ -675,13 +725,19 @@ static apr_status_t dosub(sed_eval_t *eval, char *rhsbuf, int n, + *sp++ = c; + if (sp >= eval->genbuf + eval->gsize) { + /* expand genbuf and set the sp appropriately */ +- grow_gen_buffer(eval, eval->gsize + 1024, &sp); ++ rv = grow_gen_buffer(eval, eval->gsize + 1024, &sp); ++ if (rv != APR_SUCCESS) { ++ return rv; ++ } + } + } + lp = step_vars->loc2; + step_vars->loc2 = sp - eval->genbuf + eval->linebuf; +- append_to_genbuf(eval, lp, &sp); +- copy_to_linebuf(eval, eval->genbuf, step_vars); ++ rv = append_to_genbuf(eval, lp, &sp); ++ if (rv != APR_SUCCESS) { ++ return rv; ++ } ++ rv = copy_to_linebuf(eval, eval->genbuf, step_vars); + return rv; + } + +@@ -695,7 +751,10 @@ static char *place(sed_eval_t *eval, char *asp, char *al1, char *al2) + apr_size_t reqsize = (sp - eval->genbuf) + n + 1; + + if (eval->gsize < reqsize) { +- grow_gen_buffer(eval, reqsize, &sp); ++ apr_status_t rc = grow_gen_buffer(eval, reqsize, &sp); ++ if (rc != APR_SUCCESS) { ++ return NULL; ++ } + } + memcpy(sp, al1, n); + return sp + n; +@@ -750,7 +809,8 @@ static apr_status_t command(sed_eval_t *eval, sed_reptr_t *ipc, + } + + p1++; +- copy_to_linebuf(eval, p1, step_vars); ++ rv = copy_to_linebuf(eval, p1, step_vars); ++ if (rv != APR_SUCCESS) return rv; + eval->jflag++; + break; + +@@ -760,21 +820,27 @@ static apr_status_t command(sed_eval_t *eval, sed_reptr_t *ipc, + break; + + case GCOM: +- copy_to_linebuf(eval, eval->holdbuf, step_vars); ++ rv = copy_to_linebuf(eval, eval->holdbuf, step_vars); ++ if (rv != APR_SUCCESS) return rv; + break; + + case CGCOM: +- append_to_linebuf(eval, "\n", step_vars); +- append_to_linebuf(eval, eval->holdbuf, step_vars); ++ rv = append_to_linebuf(eval, "\n", step_vars); ++ if (rv != APR_SUCCESS) return rv; ++ rv = append_to_linebuf(eval, eval->holdbuf, step_vars); ++ if (rv != APR_SUCCESS) return rv; + break; + + case HCOM: +- copy_to_holdbuf(eval, eval->linebuf); ++ rv = copy_to_holdbuf(eval, eval->linebuf); ++ if (rv != APR_SUCCESS) return rv; + break; + + case CHCOM: +- append_to_holdbuf(eval, "\n"); +- append_to_holdbuf(eval, eval->linebuf); ++ rv = append_to_holdbuf(eval, "\n"); ++ if (rv != APR_SUCCESS) return rv; ++ rv = append_to_holdbuf(eval, eval->linebuf); ++ if (rv != APR_SUCCESS) return rv; + break; + + case ICOM: +@@ -896,7 +962,8 @@ static apr_status_t command(sed_eval_t *eval, sed_reptr_t *ipc, + if (rv != APR_SUCCESS) + return rv; + } +- append_to_linebuf(eval, "\n", step_vars); ++ rv = append_to_linebuf(eval, "\n", step_vars); ++ if (rv != APR_SUCCESS) return rv; + eval->pending = ipc->next; + break; + +@@ -970,9 +1037,12 @@ static apr_status_t command(sed_eval_t *eval, sed_reptr_t *ipc, + break; + + case XCOM: +- copy_to_genbuf(eval, eval->linebuf); +- copy_to_linebuf(eval, eval->holdbuf, step_vars); +- copy_to_holdbuf(eval, eval->genbuf); ++ rv = copy_to_genbuf(eval, eval->linebuf); ++ if (rv != APR_SUCCESS) return rv; ++ rv = copy_to_linebuf(eval, eval->holdbuf, step_vars); ++ if (rv != APR_SUCCESS) return rv; ++ rv = copy_to_holdbuf(eval, eval->genbuf); ++ if (rv != APR_SUCCESS) return rv; + break; + + case YCOM: +-- +2.30.2 + |