Vulnerability Name:

CVE-2011-2939 (CCN-70187)

Assigned:2011-08-09
Published:2011-08-09
Updated:2023-02-13
Summary:Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.
CVSS v3 Severity:7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:5.1 Medium (CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P)
3.8 Low (Temporal CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
5.5 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
5.1 Medium (REDHAT CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P)
3.8 Low (REDHAT Temporal CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-122
Vulnerability Consequences:Gain Access
References:Source: CCN
Type: Perl Web site
perldelta - what is new for perl v5.14.2

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: MITRE
Type: CNA
CVE-2011-2939

Source: secalert@redhat.com
Type: Exploit, Patch
secalert@redhat.com

Source: CCN
Type: RHSA-2011-1424
Moderate: perl security update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: SA46172
Perl "decode_xs()" and "File::Glob::bsd_glob()" Vulnerabilities

Source: CCN
Type: SA55314
Oracle Solaris Perl Multiple Vulnerabilities

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: Patch
secalert@redhat.com

Source: CCN
Type: OSVDB ID: 76724
Perl Encode decode_xs() Function Input Parsing Remote Overflow

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: BID-49858
Perl 'decode_xs()' and 'File::Glob::bsd_glob()' Remote Code Execution Vulnerabilities

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: Patch
secalert@redhat.com

Source: XF
Type: UNKNOWN
perl-decodexs-bo(70187)

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:6:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:6::server:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20112939
    V
    		CVE-2011-2939
    2015-11-16
    oval:org.mitre.oval:def:18183
    P
    		USN-1643-1 -- perl vulnerabilities
    2014-06-30
    oval:org.mitre.oval:def:23778
    P
    		ELSA-2011:1424: perl security update (Moderate)
    2014-05-26
    oval:org.mitre.oval:def:22078
    P
    		RHSA-2011:1424: perl security update (Moderate)
    2014-02-24
    oval:com.ubuntu.precise:def:20112939000
    V
    		CVE-2011-2939 on Ubuntu 12.04 LTS (precise) - low.
    2012-01-13
    oval:com.redhat.rhsa:def:20111424
    P
    		RHSA-2011:1424: perl security update (Moderate)
    2011-11-03
    BACK