Code injection in mod_perl 2.0 through 2.0.10
Priority MEDIUM 53CWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 16 fixed, 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-94.
Summary
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.
Why it matters now
EPSS 0.08834 95th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 16 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | mod_perl 2.0 through 2.0.10 | mod_perl 2.0 through 2.0.10 | — | No fix listed | CNA |
- mod_perl 2.0 through 2.0.10 Vendor— Affected mod_perl 2.0 through 2.0.10 Fixed in — No fix listed CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:mod_perl:*:*:*:*:*:*:*:* | 2.0.0 – 2.0.10 | Vulnerable | Apache |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:6.7:*:*:*:*:*:*:* | 6.7 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.3:*:*:*:*:*:*:* | 7.3 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
- cpe:2.3:a:apache:mod_perl:*:*:*:*:*:*:*:* Versions 2.0.0 – 2.0.10 Vulnerable ·Apache
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:6.7:*:*:*:*:*:*:* Versions 6.7 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* | 12.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 18.10 | Vulnerable | Canonical |
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
Remediation
Red Hat 3 advisories
- RHSA-2018:2826 Released 2018-09-27 · Red Hat rating Importantrh-perl524-mod_perl security update
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-perl524-mod_perl-2.0.9-10.el6, rh-perl524-mod_perl-devel-2.0.9-10.el6
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-perl524-mod_perl-2.0.9-10.el7, rh-perl524-mod_perl-devel-2.0.9-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-perl524-mod_perl-2.0.9-10.el6, rh-perl524-mod_perl-devel-2.0.9-10.el6
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-perl524-mod_perl-2.0.9-10.el7, rh-perl524-mod_perl-devel-2.0.9-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-perl524-mod_perl-2.0.9-10.el7, rh-perl524-mod_perl-devel-2.0.9-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-perl524-mod_perl-2.0.9-10.el7, rh-perl524-mod_perl-devel-2.0.9-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-perl524-mod_perl-2.0.9-10.el6, rh-perl524-mod_perl-devel-2.0.9-10.el6
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-perl524-mod_perl-2.0.9-10.el7, rh-perl524-mod_perl-devel-2.0.9-10.el7
- RHSA-2018:2825 Released 2018-09-27 · Red Hat rating Importantrh-perl526-mod_perl security update
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-perl526-mod_perl-2.0.10-10.el7, rh-perl526-mod_perl-devel-2.0.10-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-perl526-mod_perl-2.0.10-10.el7, rh-perl526-mod_perl-devel-2.0.10-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-perl526-mod_perl-2.0.10-10.el7, rh-perl526-mod_perl-devel-2.0.10-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-perl526-mod_perl-2.0.10-10.el7, rh-perl526-mod_perl-devel-2.0.10-10.el7
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-perl526-mod_perl-2.0.10-10.el7, rh-perl526-mod_perl-devel-2.0.10-10.el7
- RHSA-2018:2737 Released 2018-09-24 · Red Hat rating Importantmod_perl security update
- Red Hat Enterprise Linux Desktop (v. 6) mod_perl-2.0.4-12.el6_10
- Red Hat Enterprise Linux Desktop Optional (v. 6) mod_perl-devel-2.0.4-12.el6_10
- Red Hat Enterprise Linux HPC Node (v. 6) mod_perl-2.0.4-12.el6_10
- Red Hat Enterprise Linux HPC Node Optional (v. 6) mod_perl-devel-2.0.4-12.el6_10
- Red Hat Enterprise Linux Server (v. 6) mod_perl-2.0.4-12.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) mod_perl-devel-2.0.4-12.el6_10, mod_perl-devel-2.0.4-12.el6_10.ppc
- Red Hat Enterprise Linux Workstation (v. 6) mod_perl-2.0.4-12.el6_10
- Red Hat Enterprise Linux Workstation Optional (v. 6) mod_perl-devel-2.0.4-12.el6_10
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2018:2737 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:2826 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:2825, RHSA-2018:2826 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) | Fixed | RHSA-2018:2826 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) | Fixed | RHSA-2018:2825, RHSA-2018:2826 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) | Fixed | RHSA-2018:2825, RHSA-2018:2826 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) | Fixed | RHSA-2018:2825, RHSA-2018:2826 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:2826 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:2825, RHSA-2018:2826 |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2011-2767
- 2026-10-03 Alias added: GHSA-hm7f-5jxx-cwvg
References
Advisory 10
- [debian-lts-announce] 20180918 [SECURITY] [DLA 1507-1] libapache2-mod-perl2 security update
- USN-3825-1
- https://bugs.debian.org/644169
- RHSA-2018:2826
- https://mail-archives.apache.org/mod_mbox/perl-modperl/201110.mbox/raw/%3C20111004084343.GA21290%40ktnx.net%3E
- RHSA-2018:2825
- RHSA-2018:2737
- USN-3825-2
- openSUSE-SU-2019:2549
- openSUSE-SU-2019:2558
Sources
- CVE-2011-2767 · CVE Program
- CVE-2011-2767 · NVD
- FIRST EPSS
- GHSA-hm7f-5jxx-cwvg · GitHub Advisory Database · CC BY 4.0
- CVE-2011-2767 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences