diff options
| author | Kees Cook <kees@debian.org> | 2011-10-14 19:47:23 +0000 |
|---|---|---|
| committer | Dmitry V. Levin <ldv@altlinux.org> | 2011-10-14 19:47:23 +0000 |
| commit | 109823cb621c900c07c4b6cdc99070d354d19444 (patch) | |
| tree | f75f2de0f16559f9dbbd60d8aa5312d22b5a7b56 /modules/pam_env/pam_env.c | |
| parent | caf5e7f61c8d9288daa49b4f61962e6b1239121d (diff) | |
pam_env: abort when encountering an overflowed environment variable expansion
* modules/pam_env/pam_env.c (_expand_arg): Abort when encountering an
overflowed environment variable expansion.
Fixes CVE-2011-3149.
Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/pam/+bug/874565
Diffstat (limited to 'modules/pam_env/pam_env.c')
| -rw-r--r-- | modules/pam_env/pam_env.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/modules/pam_env/pam_env.c b/modules/pam_env/pam_env.c index b7cd387f..e04f5b53 100644 --- a/modules/pam_env/pam_env.c +++ b/modules/pam_env/pam_env.c @@ -570,6 +570,7 @@ static int _expand_arg(pam_handle_t *pamh, char **value) D(("Variable buffer overflow: <%s> + <%s>", tmp, tmpptr)); pam_syslog (pamh, LOG_ERR, "Variable buffer overflow: <%s> + <%s>", tmp, tmpptr); + return PAM_BUF_ERR; } continue; } @@ -631,6 +632,7 @@ static int _expand_arg(pam_handle_t *pamh, char **value) D(("Variable buffer overflow: <%s> + <%s>", tmp, tmpptr)); pam_syslog (pamh, LOG_ERR, "Variable buffer overflow: <%s> + <%s>", tmp, tmpptr); + return PAM_BUF_ERR; } } } /* if ('{' != *orig++) */ @@ -642,6 +644,7 @@ static int _expand_arg(pam_handle_t *pamh, char **value) D(("Variable buffer overflow: <%s> + <%s>", tmp, tmpptr)); pam_syslog(pamh, LOG_ERR, "Variable buffer overflow: <%s> + <%s>", tmp, tmpptr); + return PAM_BUF_ERR; } } } /* for (;*orig;) */ |