From 55c1e35c59b51018319d65f62b054c7682d95dd0 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 04:23:57 +0200 Subject: Adding debian version 1.8.27-1+deb10u3. Signed-off-by: Daniel Baumann --- ...r-overflow-when-pwfeedback-is-enabled-and.patch | 95 ++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 debian/patches/Fix-a-buffer-overflow-when-pwfeedback-is-enabled-and.patch (limited to 'debian/patches/Fix-a-buffer-overflow-when-pwfeedback-is-enabled-and.patch') diff --git a/debian/patches/Fix-a-buffer-overflow-when-pwfeedback-is-enabled-and.patch b/debian/patches/Fix-a-buffer-overflow-when-pwfeedback-is-enabled-and.patch new file mode 100644 index 0000000..5d6f227 --- /dev/null +++ b/debian/patches/Fix-a-buffer-overflow-when-pwfeedback-is-enabled-and.patch @@ -0,0 +1,95 @@ +From: "Todd C. Miller" +Date: Wed, 29 Jan 2020 20:15:21 -0700 +Subject: Fix a buffer overflow when pwfeedback is enabled and input is a not a + tty. In getln() if the user enters ^U (erase line) and the write(2) fails, + the remaining buffer size is reset but the current pointer is not. While + here, fix an incorrect break for erase when write(2) fails. Also disable + pwfeedback when input is not a tty as it cannot work. CVE-2019-18634 Credit: + Joe Vennix from Apple Information Security. +Origin: https://github.com/sudo-project/sudo/commit/b5d2010b6514ff45693509273bb07df3abb0bf0a +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2019-18634 +Bug-Debian: https://bugs.debian.org/950371 + +--HG-- +branch : 1.8 +[Salvatore Bonaccorso: Backport to 1.8.27 for context changes] +--- + src/tgetpass.c | 20 ++++++++++++-------- + 1 file changed, 12 insertions(+), 8 deletions(-) + +--- a/src/tgetpass.c ++++ b/src/tgetpass.c +@@ -60,7 +60,7 @@ static volatile sig_atomic_t signo[NSIG] + + static bool tty_present(void); + static void tgetpass_handler(int); +-static char *getln(int, char *, size_t, int, enum tgetpass_errval *); ++static char *getln(int, char *, size_t, bool, enum tgetpass_errval *); + static char *sudo_askpass(const char *, const char *); + + static int +@@ -123,6 +123,7 @@ tgetpass(const char *prompt, int timeout + static const char *askpass; + static char buf[SUDO_CONV_REPL_MAX + 1]; + int i, input, output, save_errno, neednl = 0, need_restart; ++ bool feedback = ISSET(flags, TGP_MASK); + enum tgetpass_errval errval; + debug_decl(tgetpass, SUDO_DEBUG_CONV) + +@@ -170,7 +171,7 @@ restart: + */ + if (!ISSET(flags, TGP_ECHO)) { + for (;;) { +- if (ISSET(flags, TGP_MASK)) ++ if (feedback) + neednl = sudo_term_cbreak(input); + else + neednl = sudo_term_noecho(input); +@@ -184,6 +185,9 @@ restart: + } + } + } ++ /* Only use feedback mode when we can disable echo. */ ++ if (!neednl) ++ feedback = false; + + /* + * Catch signals that would otherwise cause the user to end +@@ -209,7 +213,7 @@ restart: + + if (timeout > 0) + alarm(timeout); +- pass = getln(input, buf, sizeof(buf), ISSET(flags, TGP_MASK), &errval); ++ pass = getln(input, buf, sizeof(buf), feedback, &errval); + alarm(0); + save_errno = errno; + +@@ -345,7 +349,7 @@ sudo_askpass(const char *askpass, const + extern int sudo_term_eof, sudo_term_erase, sudo_term_kill; + + static char * +-getln(int fd, char *buf, size_t bufsiz, int feedback, ++getln(int fd, char *buf, size_t bufsiz, bool feedback, + enum tgetpass_errval *errval) + { + size_t left = bufsiz; +@@ -374,15 +378,15 @@ getln(int fd, char *buf, size_t bufsiz, + while (cp > buf) { + if (write(fd, "\b \b", 3) == -1) + break; +- --cp; ++ cp--; + } ++ cp = buf; + left = bufsiz; + continue; + } else if (c == sudo_term_erase) { + if (cp > buf) { +- if (write(fd, "\b \b", 3) == -1) +- break; +- --cp; ++ ignore_result(write(fd, "\b \b", 3)); ++ cp--; + left++; + } + continue; -- cgit v1.2.3