The rehash mechanism in Perl 5.8.2 through 5.16.x allows context-dependent attackers to cause a denial of service (memory consumption and crash) via a crafted hash key.

The remote OracleVM system is missing necessary patches to address critical security updates :

  - Do not extend allowable epoch values in     Time::Local::timelocal to remove useless warning on     64-bit platforms (Resolves: rhbz#1149375)

  - Fix perl segfaults with custom signal handle (Resolves:
    rhbz#991854)

  - Reorder AnyDBM_File back-end preference (Resolves:
    rhbz#1018721)

  - Fix backslash interpolation in Locale::Maketext     (Resolves: rhbz#1029016)

  - Enable year 2038 for Time::Local on 64-bit platforms     (Resolves: rhbz#1057047)

  - 800340 - strftime memory leak perl bug (RT#73520)

  - Resolves: rhbz#800340

  - Fix CVE-2012-5195 heap buffer overrun at repeatcpy     (Resolves: rhbz#915691)

  - Fix CVE-2012-5526 newline injection due to improper CRLF     escaping in Set-Cookie and P3P headers (Resolves:
    rhbz#915691)

  - Fix CVE-2012-6329 possible arbitrary code execution via     Locale::Maketext (Resolves: rhbz#915691)

  - Fix CVE-2013-1667 DoS in rehashing code (Resolves:
    rhbz#915691)

  - 848156 - Reverts code of perl-5.8.8-U32019.patch

  - Resolves: rhbz#848156

CVE-2012-5195 Heap-based buffer overflow in the Perl_repeatcpy function in util.c in Perl 5.12.x before 5.12.5, 5.14.x before 5.14.3, and 5.15.x before 15.15.5 allows context-dependent attackers to cause a denial of service (memory consumption and crash) or possibly execute arbitrary code via the 'x' string repeat operator.

CVE-2012-5526 CGI.pm module before 3.63 for Perl does not properly escape newlines in (1) Set-Cookie or (2) P3P headers, which might allow remote attackers to inject arbitrary headers into responses from applications that use CGI.pm.

CVE-2012-6329 The _compile function in Maketext.pm in the Locale::Maketext implementation in Perl before 5.17.7 does not properly handle backslashes and fully qualified method names during compilation of bracket notation, which allows context-dependent attackers to execute arbitrary commands via crafted input to an application that accepts translation strings from users, as demonstrated by the TWiki application before 5.1.3, and the Foswiki application 1.0.x through 1.0.10 and 1.1.x through 1.1.6.

CVE-2013-1667 The rehash mechanism in Perl 5.8.2 through 5.16.x allows context-dependent attackers to cause a denial of service (memory consumption and crash) via a crafted hash key.

The remote Solaris system is missing necessary patches to address security updates :

  - The rehash mechanism in Perl 5.8.2 through 5.16.x allows     context-dependent attackers to cause a denial of service     (memory consumption and crash) via a crafted hash key.
    (CVE-2013-1667)

Perl was updated to fix 3 security issues :

  - fix rehash denial of service (compute time) [bnc#804415]     [CVE-2013-1667]

  - improve CGI crlf escaping [bnc#789994] [CVE-2012-5526]

  - sanitize input in Maketext.pm to avoid code injection     [bnc#797060] [CVE-2012-6329]

In openSUSE 12.1 also the following non-security bug was fixed :

  - fix IPC::Open3 bug when '-' is used [bnc#755278]

The remote host is affected by the vulnerability described in GLSA-201401-11 (Perl, Locale Maketext Perl module: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Perl and       Locale::Maketext Perl module. Please review the CVE identifiers       referenced below for details.
  Impact :

    A context-dependent attacker could possibly execute arbitrary code with       the privileges of the process or cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

The remote host is running a version of Mac OS X 10.x that is prior to version 10.9. The newer version contains multiple security-related fixes for the following components :

  - Application Firewall
  - App Sandbox
  - Bluetooth
  - CFNetwork
  - CFNetwork SSL
  - Console
  - CoreGraphics
  - curl
  - dyld
  - IOKitUser
  - IOSerialFamily
  - Kernel
  - Kext Management
  - LaunchServices
  - Libc
  - Mail Accounts
  - Mail Header Display
  - Mail Networking
  - OpenLDAP
  - perl
  - Power Management
  - python
  - ruby
  - Security
  - Security - Authorization
  - Security - Smart Card Services
  - Screen Lock
  - Screen Sharing Server
  - syslog
  - USB

A heap overflow flaw was found in Perl. If a Perl application allowed user input to control the count argument of the string repeat operator, an attacker could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-5195)

A denial of service flaw was found in the way Perl's rehashing code implementation, responsible for recalculation of hash keys and redistribution of hash content, handled certain input. If an attacker supplied specially crafted input to be used as hash keys by a Perl application, it could cause excessive memory consumption.
(CVE-2013-1667)

It was found that the Perl CGI module, used to handle Common Gateway Interface requests and responses, incorrectly sanitized the values for Set-Cookie and P3P headers. If a Perl application using the CGI module reused cookies values and accepted untrusted input from web browsers, a remote attacker could use this flaw to alter member items of the cookie or add new items. (CVE-2012-5526)

It was found that the Perl Locale::Maketext module, used to localize Perl applications, did not properly handle backslashes or fully-qualified method names. An attacker could possibly use this flaw to execute arbitrary Perl code with the privileges of a Perl application that uses untrusted Locale::Maketext templates.
(CVE-2012-6329)

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-0685 advisory.

    - Resolves: #915692 - CVE-2012-5526 (newline injection due to improper CRLF       escaping in Set-Cookie and P3P headers)
    - Resolves: #915692 - CVE-2012-6329 (possible arbitrary code execution via       Locale::Maketext)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Updated perl packages fix security vulnerability :

It was discovered that Perl's 'x' string repeat operator is vulnerable to a heap-based buffer overflow. An attacker could use this to execute arbitrary code (CVE-2012-5195).

The _compile function in Maketext.pm in the Locale::Maketext implementation in Perl before 5.17.7 does not properly handle backslashes and fully qualified method names during compilation of bracket notation, which allows context-dependent attackers to execute arbitrary commands via crafted input to an application that accepts translation strings from users (CVE-2012-6329).

In order to prevent an algorithmic complexity attack against its hashing mechanism, perl will sometimes recalculate keys and redistribute the contents of a hash. This mechanism has made perl robust against attacks that have been demonstrated against other systems. Research by Yves Orton has recently uncovered a flaw in the rehashing code which can result in pathological behavior. This flaw could be exploited to carry out a denial of service attack against code that uses arbitrary user input as hash keys. Because using user-provided strings as hash keys is a very common operation, we urge users of perl to update their perl executable as soon as possible.
Updates to address this issue have bene pushed to main-5.8, maint-5.10, maint-5.12, maint-5.14, and maint-5.16 branches today.
Vendors* were informed of this problem two weeks ago and are expected to be shipping updates today (or otherwise very soon) (CVE-2013-1667).

Update to Perl 5.14.4 Fix CVE-2013-1667 (DoS in rehashing code). Add NAME section to perl-CPAN manual pages to build whatis database properly.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

A heap overflow flaw was found in Perl. If a Perl application allowed user input to control the count argument of the string repeat operator, an attacker could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-5195)

A denial of service flaw was found in the way Perl's rehashing code implementation, responsible for recalculation of hash keys and redistribution of hash content, handled certain input. If an attacker supplied specially crafted input to be used as hash keys by a Perl application, it could cause excessive memory consumption.
(CVE-2013-1667)

It was found that the Perl CGI module, used to handle Common Gateway Interface requests and responses, incorrectly sanitized the values for Set-Cookie and P3P headers. If a Perl application using the CGI module reused cookies values and accepted untrusted input from web browsers, a remote attacker could use this flaw to alter member items of the cookie or add new items. (CVE-2012-5526)

It was found that the Perl Locale::Maketext module, used to localize Perl applications, did not properly handle backslashes or fully-qualified method names. An attacker could possibly use this flaw to execute arbitrary Perl code with the privileges of a Perl application that uses untrusted Locale::Maketext templates.
(CVE-2012-6329)

All running Perl programs must be restarted for this update to take effect.

Updated perl packages that fix multiple security issues now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Perl is a high-level programming language commonly used for system administration utilities and web programming.

A heap overflow flaw was found in Perl. If a Perl application allowed user input to control the count argument of the string repeat operator, an attacker could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-5195)

A denial of service flaw was found in the way Perl's rehashing code implementation, responsible for recalculation of hash keys and redistribution of hash content, handled certain input. If an attacker supplied specially crafted input to be used as hash keys by a Perl application, it could cause excessive memory consumption.
(CVE-2013-1667)

It was found that the Perl CGI module, used to handle Common Gateway Interface requests and responses, incorrectly sanitized the values for Set-Cookie and P3P headers. If a Perl application using the CGI module reused cookies values and accepted untrusted input from web browsers, a remote attacker could use this flaw to alter member items of the cookie or add new items. (CVE-2012-5526)

It was found that the Perl Locale::Maketext module, used to localize Perl applications, did not properly handle backslashes or fully-qualified method names. An attacker could possibly use this flaw to execute arbitrary Perl code with the privileges of a Perl application that uses untrusted Locale::Maketext templates.
(CVE-2012-6329)

Red Hat would like to thank the Perl project for reporting CVE-2012-5195 and CVE-2013-1667. Upstream acknowledges Tim Brown as the original reporter of CVE-2012-5195 and Yves Orton as the original reporter of CVE-2013-1667.

All Perl users should upgrade to these updated packages, which contain backported patches to correct these issues. All running Perl programs must be restarted for this update to take effect.

Fix CVE-2013-1667 (DoS in rehashing code).

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Yves Orton discovered that Perl incorrectly handled hashing when using user-provided hash keys. An attacker could use this flaw to perform a denial of service attack against software written in Perl.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

New perl packages are available for Slackware 13.1, 13.37, 14.0, and
-current to fix a security issue.

This update of Perl 5 fixes the following security issues :

  - fix rehash DoS [bnc#804415] [CVE-2013-1667]

  - improve CGI crlf escaping [bnc#789994] [CVE-2012-5526]

  - fix glob denial of service [bnc#796014] [CVE-2011-2728]

  - sanitize input in Maketext.pm [bnc#797060]     [CVE-2012-6329]

  - make getgrent work with long group entries [bnc#788388]

This update of Perl 5 fixes the following security issues :

  - fix rehash DoS [bnc#804415] [CVE-2013-1667]

  - improve CGI crlf escaping [bnc#789994] [CVE-2012-5526]

  - fix glob denial of service [bnc#796014] [CVE-2011-2728]

  - sanitize input in Maketext.pm [bnc#797060]     [CVE-2012-6329]

Perl developers report :

In order to prevent an algorithmic complexity attack against its hashing mechanism, perl will sometimes recalculate keys and redistribute the contents of a hash. This mechanism has made perl robust against attacks that have been demonstrated against other systems.

Research by Yves Orton has recently uncovered a flaw in the rehashing code which can result in pathological behavior. This flaw could be exploited to carry out a denial of service attack against code that uses arbitrary user input as hash keys.

Because using user-provided strings as hash keys is a very common operation, we urge users of perl to update their perl executable as soon as possible.

Yves Orton discovered a flaw in the rehashing code of Perl. This flaw could be exploited to carry out a denial of service attack against code that uses arbitrary user input as hash keys. Specifically an attacker could create a set of keys of a hash causing a denial of service via memory exhaustion.

ID	Name	Product	Family	Severity
91752	OracleVM 3.2 : perl (OVMSA-2016-0076)	Nessus	OracleVM Local Security Checks	high
85945	F5 Networks BIG-IP : Perl vulnerabilities (K15867)	Nessus	F5 Networks Local Security Checks	high
80729	Oracle Solaris Third-Party Patch Update : perl-58 (cve_2013_1667_denial_of)	Nessus	Solaris Local Security Checks	high
80728	Oracle Solaris Third-Party Patch Update : perl-516 (cve_2013_1667_denial_of2)	Nessus	Solaris Local Security Checks	high
80726	Oracle Solaris Third-Party Patch Update : perl-512 (cve_2013_1667_denial_of1)	Nessus	Solaris Local Security Checks	high
74932	openSUSE Security Update : perl (openSUSE-SU-2013:0497-1)	Nessus	SuSE Local Security Checks	high
72033	GLSA-201401-11 : Perl, Locale Maketext Perl module: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
70561	Mac OS X 10.x < 10.9 Multiple Vulnerabilities (BEAST)	Nessus	MacOS X Local Security Checks	high
69736	Amazon Linux AMI : perl (ALAS-2013-177)	Nessus	Amazon Linux Local Security Checks	high
68797	Oracle Linux 5 / 6 : perl (ELSA-2013-0685)	Nessus	Oracle Linux Local Security Checks	critical
66125	Mandriva Linux Security Advisory : perl (MDVSA-2013:113)	Nessus	Mandriva Local Security Checks	high
65772	Fedora 17 : perl-5.14.4-224.fc17 (2013-3673)	Nessus	Fedora Local Security Checks	high
65715	Scientific Linux Security Update : perl on SL5.x, SL6.x i386/x86_64 (20130326)	Nessus	Scientific Linux Local Security Checks	high
65698	RHEL 5 / 6 : perl (RHSA-2013:0685)	Nessus	Red Hat Local Security Checks	high
65694	CentOS 5 / 6 : perl (CESA-2013:0685)	Nessus	CentOS Local Security Checks	high
65647	Fedora 18 : perl-5.16.2-240.fc18 (2013-3436)	Nessus	Fedora Local Security Checks	high
65629	Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : perl vulnerability (USN-1770-1)	Nessus	Ubuntu Local Security Checks	high
65552	Slackware 13.1 / 13.37 / 14.0 / current : perl (SSA:2013-072-01)	Nessus	Slackware Local Security Checks	high
65249	SuSE 10 Security Update : Perl (ZYPP Patch Number 8479)	Nessus	SuSE Local Security Checks	high
65247	SuSE 11.2 Security Update : Perl (SAT Patch Number 7439)	Nessus	SuSE Local Security Checks	high
65199	FreeBSD : perl -- denial of service via algorithmic complexity attack on hashing routines (68c1f75b-8824-11e2-9996-c48508086173)	Nessus	FreeBSD Local Security Checks	high
65178	Debian DSA-2641-2 : perl - rehashing flaw	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2013-1667

critical

Tenable Plugins

high

high

high

high

high

high

high

high

high

critical

high

high

high

high

high

high

high

high

high

high

high

high