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Diffstat (limited to '')
| -rw-r--r-- | debian/patches/BUG-MINOR-h3-reject-more-chars-from-the-path-pseudo-.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/debian/patches/BUG-MINOR-h3-reject-more-chars-from-the-path-pseudo-.patch b/debian/patches/BUG-MINOR-h3-reject-more-chars-from-the-path-pseudo-.patch new file mode 100644 index 0000000..cbc086c --- /dev/null +++ b/debian/patches/BUG-MINOR-h3-reject-more-chars-from-the-path-pseudo-.patch @@ -0,0 +1,71 @@ +From: Willy Tarreau <w@1wt.eu> +Date: Tue, 8 Aug 2023 17:54:26 +0200 +Subject: BUG/MINOR: h3: reject more chars from the :path pseudo header +Origin: https://git.haproxy.org/?p=haproxy-2.6.git;a=commit;h=eacaa76e7b0e4182dfd17e1e7ca8c02c1cdab72c + +This is the h3 version of this previous fix: + + BUG/MINOR: h2: reject more chars from the :path pseudo header + +In addition to the current NUL/CR/LF, this will also reject all other +control chars, the space and '#' from the :path pseudo-header, to avoid +taking the '#' for a part of the path. It's still possible to fall back +to the previous behavior using "option accept-invalid-http-request". + +Here the :path header value is scanned a second time to look for +forbidden chars because we don't know upfront if we're dealing with a +path header field or another one. This is no big deal anyway for now. + +This should be progressively backported to 2.6, along with the +following commits it relies on (the same as for h2): + + REGTESTS: http-rules: add accept-invalid-http-request for normalize-uri tests + REORG: http: move has_forbidden_char() from h2.c to http.h + MINOR: ist: add new function ist_find_range() to find a character range + MINOR: http: add new function http_path_has_forbidden_char() + +(cherry picked from commit 2e97857a845540887a92029a566deb5b51f61d0b) +Signed-off-by: Amaury Denoyelle <adenoyelle@haproxy.com> +(cherry picked from commit 96dfea858edab8f1f63fa6e4df43f505b81fdad9) +Signed-off-by: Amaury Denoyelle <adenoyelle@haproxy.com> +(cherry picked from commit 97c15782afd9c70281ff0c72971485227494cc12) +Signed-off-by: Amaury Denoyelle <adenoyelle@haproxy.com> +--- + src/h3.c | 14 ++++++++++++++ + 1 file changed, 14 insertions(+) + +diff --git a/src/h3.c b/src/h3.c +index b42d41647e4e..e519fb4432e7 100644 +--- a/src/h3.c ++++ b/src/h3.c +@@ -402,6 +402,7 @@ static ssize_t h3_headers_to_htx(struct qcs *qcs, const struct buffer *buf, + int hdr_idx, ret; + int cookie = -1, last_cookie = -1, i; + const char *ctl; ++ int relaxed = !!(h3c->qcc->proxy->options2 & PR_O2_REQBUG_OK); + + /* RFC 9114 4.1.2. Malformed Requests and Responses + * +@@ -500,6 +501,19 @@ static ssize_t h3_headers_to_htx(struct qcs *qcs, const struct buffer *buf, + len = -1; + goto out; + } ++ ++ if (!relaxed) { ++ /* we need to reject any control chars or '#' from the path, ++ * unless option accept-invalid-http-request is set. ++ */ ++ ctl = ist_find_range(list[hdr_idx].v, 0, '#'); ++ if (unlikely(ctl) && http_path_has_forbidden_char(list[hdr_idx].v, ctl)) { ++ TRACE_ERROR("forbidden character in ':path' pseudo-header", H3_EV_RX_FRAME|H3_EV_RX_HDR, qcs->qcc->conn, qcs); ++ len = -1; ++ goto out; ++ } ++ } ++ + path = list[hdr_idx].v; + } + else if (isteq(list[hdr_idx].n, ist(":scheme"))) { +-- +2.43.0 + |