Vulnerability in Rsyslog
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 2.1 (Low). Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.004 (33.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Rsyslog — versions 4.1.0, 4.1.1, 4.1.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.adiscon.com/show_bug.cgi
- www.ubuntu.com/usn/USN-1338-1 (vendor-advisory, Patch, Vendor Advisory)
- rsyslog.com/changelog-for-6-1-4-devel/
- bugzilla.redhat.com/show_bug.cgi
- git.adiscon.com/
- www.securitytracker.com/id (vdb-entry)
- rsyslog.com/changelog-for-5-7-4-v5-beta/
- secunia.com/advisories/45848 (Vendor Advisory, third-party-advisory)
- www.securityfocus.com/bid/51171 (vdb-entry)
- secunia.com/advisories/47698 (Vendor Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2011-4623?
- CVE-2011-4623 is a vulnerability in Rsyslog, classified under CWE-189. Published 2012-09-25.
- Is CVE-2011-4623 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.