Is CVE-2011-2767 in the CISA KEV catalog?

No. CVE-2011-2767 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-2767?

CVE-2011-2767 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2011-2767?

CVE-2011-2767 has an EPSS score of 8.95% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-2767?

Upgrade libapache2-mod-perl2 on debian 11 to 2.0.10-3 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2011-2767

CRITICALEPSS 95th pctl

9.8

CVSS v3

NVD

Description

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.

CWE-94Code Injection

How to fix

Remediation Available

libapache2-mod-perl2Debian

Fixed in:2.0.10-3CVE-2011-2767

libapache2-mod-perl2Ubuntu

Fixed in:2.0.8+httpd24-r1449661-6ubuntu2.1USN-3825-1

Fixed in:2.0.9-4ubuntu1.2USN-3825-1

Fixed in:2.0.10-2ubuntu3.18.04.1USN-3825-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

8.95%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Third-Party Advisory9

Other references3

Related Vulnerabilities

Other CWE-94 (Code Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-9841	Critical	9.8	100%	KEV	Fix
CVE-2015-1635	Critical	9.8	100%	KEV	-
CVE-2022-22954	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-22204	Medium	6.8	100%	KEV	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2012-0158	High	8.8	100%	KEV	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.