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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…
Low2.1EPSS 0.42%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
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.
Timeline
ID reserved
By redhat
- 10 months later
· 10 months later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 0.42% · top 63% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.1.
Weakness
Affected products
n/a
- affected n/a
References (12)
- http://bugzilla.adiscon.com/show_bug.cgi?id=221 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-1338-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://rsyslog.com/changelog-for-6-1-4-devel/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=769822 (opens in a new tab)x_refsource_MISCx_transferred
- http://git.adiscon.com/?p=rsyslog.git%3Ba=commit%3Bh=6bad782f154b7f838c7371bf99c13f6dc4ec4101 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1026556 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://rsyslog.com/changelog-for-5-7-4-v5-beta/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 45848 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 51171 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 47698 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://rsyslog.com/changelog-for-4-6-6-v4-stable/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20111222 Re: CVE Request -- rsyslog -- DoS due integer signedness error while extending rsyslog counted string buffer (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2011-4623)Record last updated .