CVE-2011-0427
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote...
CVE-2011-0427 is a medium vulnerability (CVSS 6.8) in Tor, published January 17, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.44%, the 91st percentile. Fixed in tor 0.2.1.29-1.
- Severity
- 6.8 MediumCVSS 2.0, NVD
- Exploit chance
- 4.44%EPSS, 91st percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.2.1.29-1tor +4 more
Description
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
torDebian:12 | before 0.2.1.29-1 | 0.2.1.29-1 |
torDebian:13 | before 0.2.1.29-1 | 0.2.1.29-1 |
torDebian:14 | before 0.2.1.29-1 | 0.2.1.29-1 |
torDebian:5.0 From an advisory covering 7 CVEs | before 0.2.1.29-1~lenny+1, plus listed versions 0.2.0.33-10.2.0.34-10.2.0.34-1~bpo40+10.2.0.35-10.2.0.35-1~lenny1 Show 45 moreShow less0.2.0.35-1~lenny20.2.1.10-alpha-10.2.1.11-alpha-10.2.1.12-alpha-10.2.1.13-alpha-10.2.1.14-rc-10.2.1.15-rc-10.2.1.16-rc-10.2.1.17-rc-10.2.1.18-10.2.1.19-10.2.1.2-alpha-10.2.1.20-10.2.1.20-20.2.1.21-10.2.1.21-1~bpo50+10.2.1.22-10.2.1.22-1~bpo50+10.2.1.23-10.2.1.23-20.2.1.25-10.2.1.25-1~bpo50+10.2.1.25-20.2.1.25-30.2.1.26-10.2.1.26-1~bpo50+10.2.1.26-1~lenny+10.2.1.26-1~lenny+20.2.1.26-1~lenny+40.2.1.26-1~lennyvolatile10.2.1.26-1~lennyvolatile20.2.1.26-20.2.1.26-30.2.1.26-40.2.1.26-4~bpo50+10.2.1.26-50.2.1.26-60.2.1.26-6~bpo50+10.2.1.4-alpha-10.2.1.5-alpha-10.2.1.6-alpha-10.2.1.7-alpha-10.2.1.7-alpha-20.2.1.8-alpha-10.2.1.9-alpha-1 | 0.2.1.29-1~lenny+1 |
toropenSUSE:Tumbleweed From an advisory covering 22 CVEs | before 0.2.8.11-1.1 | 0.2.8.11-1.1 |
What each source reports
NVD Score used
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
- Record
CVE-2011-0427- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE ListNo score
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
- Record
CVE-2011-0427- Updated
- 2026-11-02
EUVDEUVD-2011-0453No score
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
- Record
EUVD-2011-0453- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2v69-c83c-r4mhNo score
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote...
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
- Record
GHSA-2v69-c83c-r4mh- Weakness
- CWE-119
- Updated
- 2026-11-02
OSVNo score
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
- Record
CVE-2011-0427- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-0427No score
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
- Record
DEBIAN-CVE-2011-0427- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10423-1No score
tor-0.2.8.11-1.1 on GA media
These are all security issues fixed in the tor-0.2.8.11-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10423-1- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
archives.seul.org/or/announce/Jan-2011/msg00000.html
vupen.com/english/advisories/2011/0131
gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
secunia.com/advisories/42907
blog.torproject.org/blog/tor-02129-released-security-patches
securitytracker.com/id?1024980
Show 30 moreShow less
exchange.xforce.ibmcloud.com/vulnerabilities/64748
debian.org/security/2011/dsa-2148
securityfocus.com/bid/45832
nvd.nist.gov/vuln/detail/CVE-2011-0427
github.com/advisories/GHSA-2v69-c83c-r4mh
security-tracker.debian.org/tracker/CVE-2011-0427
suse.com/security/cve/CVE-2011-0427