Buffer overflow in Rsyslog
CVE-2011-3200
Stack-based buffer overflow in the parseLegacySyslogMsg function in tools/syslogd.c in rsyslogd in rsyslog 4.6.x before 4.6.8 and 5.2.0 through 5.8.4 might allow remote attackers to cause a denial of service (application exit) via a long TAG in a legacy syslog message.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/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: 0.208 (97.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.208 · newest: 0.208 · change: 0.000
Affected products
- Rsyslog — versions 4.6.0, 4.6.1, 4.6.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/46027 (third-party-advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch)
- www.rsyslog.com/potential-dos-with-malformed-tag/ (Patch, Vendor Advisory)
- securitytracker.com/id (vdb-entry)
- lists.opensuse.org/opensuse-updates/2011-09/msg00013.html (vendor-advisory)
- git.adiscon.com/
- www.redhat.com/support/errata/RHSA-2011-1247.html (vendor-advisory)
- www.mandriva.com/security/advisories (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2011-September/065941.html (vendor-advisory)
- www.securityfocus.com/bid/49413 (vdb-entry)
Frequently asked questions
- What is CVE-2011-3200?
- CVE-2011-3200 is a vulnerability in Rsyslog, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2011-09-06.
- Is CVE-2011-3200 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.