Vulnerability Report

CVE-2011-4623

Title: Rsyslog Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2011-4623.

CWE Category CWE-189

Published Date Sep 25, 2012

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 2.1 CVSS v2.0

Exploit Probability (EPSS)

0.42%

Vulnerability Summary

CVE-2011-4623: Integer overflow in the rsCStrExtendBuf function in runtime/stringbuf.c in the imfile module in rsyslog 4.x before 4.6.6, 5.x before 5.7.4, and 6.x before 6.1.4 allows local users to cause a denial of service (daemon hang) via a large file, which triggers a heap-based buffer overflow.

Impacted Vendors

rsyslog 1

Reference Links

http://bugzilla.adiscon.com/show_bug.cgi?id=221 http://git.adiscon.com/?p=rsyslog.git%3Ba=commit%3Bh=6bad782f154b7f838c7371bf99c13f6dc4ec4101 http://rsyslog.com/changelog-for-4-6-6-v4-stable/ http://rsyslog.com/changelog-for-5-7-4-v5-beta/ http://rsyslog.com/changelog-for-6-1-4-devel/ http://secunia.com/advisories/45848 http://secunia.com/advisories/47698 http://www.openwall.com/lists/oss-security/2011/12/22/2 http://www.securityfocus.com/bid/51171 http://www.securitytracker.com/id?1026556 http://www.ubuntu.com/usn/USN-1338-1 https://bugzilla.redhat.com/show_bug.cgi?id=769822 http://bugzilla.adiscon.com/show_bug.cgi?id=221 http://git.adiscon.com/?p=rsyslog.git%3Ba=commit%3Bh=6bad782f154b7f838c7371bf99c13f6dc4ec4101 http://rsyslog.com/changelog-for-4-6-6-v4-stable/ http://rsyslog.com/changelog-for-5-7-4-v5-beta/ http://rsyslog.com/changelog-for-6-1-4-devel/ http://secunia.com/advisories/45848 http://secunia.com/advisories/47698 http://www.openwall.com/lists/oss-security/2011/12/22/2 http://www.securityfocus.com/bid/51171 http://www.securitytracker.com/id?1026556 http://www.ubuntu.com/usn/USN-1338-1 https://bugzilla.redhat.com/show_bug.cgi?id=769822

CVSS v2.0

Source Entity [email protected]

Severity LOW

2.1

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-4623 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

September 25, 2012 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected Stack

No specific products linked.