RCE in Apache Mod Perl
CVE-2011-2767
mod_perl 2.0 through 2.0.10 allows attackers to execute arbitrary Perl code by placing it in a user-owned .htaccess file, because (contrary to the documentation) there is no configuration option that permits Perl code for the administrator's control of HTTP request processing without also permitting unprivileged users to run Perl code in the context of the user account that runs Apache HTTP Server processes.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.089 (94.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Mod_perl
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 8.0
- Redhat Enterprise_linux — versions 6.0, 6.7, 7.0
- Redhat Enterprise_linux_desktop — versions 6.0
- Redhat Enterprise_linux_server — versions 6.0
- Redhat Enterprise_linux_workstation — versions 6.0
- N/a Mod_perl 2.0 Through 2.0.10 — versions mod_perl 2.0 through 2.0.10
Weakness classification (CWE)
References
- security@debian.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@debian.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@debian.org (Mailing List, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- security@debian.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@debian.org (Mailing List, Third Party Advisory, x_refsource_MISC)
- security@debian.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@debian.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@debian.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2011-2767?
- CVE-2011-2767 is a critical-severity vulnerability in Apache Mod Perl, classified under Code Injection. CVSS score: 9.8/10. Published 2018-08-26.
- How severe is CVE-2011-2767?
- Critical severity. CVSS v3 base score is 9.8 out of 10.