mod_perl up to 2.0.10 .htaccess HTTP Request code injection

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in mod_perl up to 2.0.10 and classified as critical. This issue affects some unknown processing of the component .htaccess Handler. This manipulation as part of HTTP Request causes code injection. The identification of this vulnerability is CVE-2011-2767. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in mod_perl up to 2.0.10 (Programming Language Software) and classified as critical. Affected by this vulnerability is an unknown part of the component .htaccess Handler. The manipulation as part of a HTTP Request leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 09/27/2018. The weakness was shared 08/26/2018 (Website). It is possible to read the advisory at bugs.debian.org. This vulnerability is known as CVE-2011-2767 since 07/19/2011. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 117374 (Fedora 27 : mod_perl (2018-a94668408d)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351522 (Amazon Linux Security Advisory for mod_perl: AL2012-2018-274).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117374) and SecurityFocus (BID 105195†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117374
Nessus Name: Fedora 27 : mod_perl (2018-a94668408d)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

07/19/2011 🔍
10/03/2011 +76 days 🔍
08/26/2018 +2518 days 🔍
08/26/2018 +0 days 🔍
08/27/2018 +1 days 🔍
09/07/2018 +11 days 🔍
09/10/2018 +3 days 🔍
09/27/2018 +17 days 🔍
05/04/2023 +1680 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-a94668408d
Status: Not defined

CVE: CVE-2011-2767 (🔍)
GCVE (CVE): GCVE-0-2011-2767
GCVE (VulDB): GCVE-100-123259
SecurityFocus: 105195 - Apache 'mod_perl' CVE-2011-2767 Arbitrary Code Execution Vulnerability

Entryinfo

Created: 08/27/2018 06:56
Updated: 05/04/2023 15:52
Changes: 08/27/2018 06:56 (72), 03/18/2020 11:29 (5), 05/04/2023 15:46 (4), 05/04/2023 15:52 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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