CVE-2011-0427

Name: CVE-2011-0427
Creator: NVD / NIST
Published: 2011-01-19T12:00:19.75+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.44%

Last modified Jun 16, 2026

CVE-2011-0427 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.44% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

4.44%

90.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Tor	Tor	<= 0.2.1.28	—
Tor	Tor	0.0.2	—
Tor	Tor	0.0.2_pre13	—
Tor	Tor	0.0.2_pre14	—
Tor	Tor	0.0.2_pre15	—
Tor	Tor	0.0.2_pre16	—
Tor	Tor	0.0.2_pre17	—
Tor	Tor	0.0.2_pre18	—
Tor	Tor	0.0.2_pre19	—
Tor	Tor	0.0.2_pre20	—
Tor	Tor	0.0.2_pre21	—
Tor	Tor	0.0.2_pre22	—
Tor	Tor	0.0.2_pre23	—
Tor	Tor	0.0.2_pre24	—
Tor	Tor	0.0.2_pre25	—
Tor	Tor	0.0.2_pre26	—
Tor	Tor	0.0.2_pre27	—
Tor	Tor	0.0.3	—
Tor	Tor	0.0.4	—
Tor	Tor	0.0.5	—
Tor	Tor	0.0.6	—
Tor	Tor	0.0.6.1	—
Tor	Tor	0.0.6.2	—
Tor	Tor	0.0.7	—
Tor	Tor	0.0.7.1	—
Tor	Tor	0.0.7.2	—
Tor	Tor	0.0.7.3	—
Tor	Tor	0.0.8	—
Tor	Tor	0.0.8.1	—
Tor	Tor	0.0.9	—
Tor	Tor	0.0.9.1	—
Tor	Tor	0.0.9.2	—
Tor	Tor	0.0.9.3	—
Tor	Tor	0.0.9.4	—
Tor	Tor	0.0.9.5	—
Tor	Tor	0.0.9.6	—
Tor	Tor	0.0.9.7	—
Tor	Tor	0.0.9.8	—
Tor	Tor	0.0.9.9	—
Tor	Tor	0.0.9.10	—
Tor	Tor	0.1.0.1	—
Tor	Tor	0.1.0.2	—
Tor	Tor	0.1.0.3	—
Tor	Tor	0.1.0.4	—
Tor	Tor	0.1.0.5	—
Tor	Tor	0.1.0.6	—
Tor	Tor	0.1.0.7	—
Tor	Tor	0.1.0.8	—
Tor	Tor	0.1.0.9	—
Tor	Tor	0.1.0.10	—

Showing 50 of 186 affected configurations. See NVD for the full list.

References

http://archives.seul.org/or/announce/Jan-2011/msg00000.htmlPatch
http://blog.torproject.org/blog/tor-02129-released-security-patchesPatch, Vendor Advisory
http://secunia.com/advisories/42905Vendor Advisory
http://secunia.com/advisories/42907Vendor Advisory
http://www.debian.org/security/2011/dsa-2148
http://www.securityfocus.com/bid/45832
http://www.securitytracker.com/id?1024980
http://www.vupen.com/english/advisories/2011/0131Vendor Advisory
http://www.vupen.com/english/advisories/2011/0132Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/64748
https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLogPatch
http://archives.seul.org/or/announce/Jan-2011/msg00000.htmlPatch
http://blog.torproject.org/blog/tor-02129-released-security-patchesPatch, Vendor Advisory
http://secunia.com/advisories/42905Vendor Advisory
http://secunia.com/advisories/42907Vendor Advisory
http://www.debian.org/security/2011/dsa-2148
http://www.securityfocus.com/bid/45832
http://www.securitytracker.com/id?1024980
http://www.vupen.com/english/advisories/2011/0131Vendor Advisory
http://www.vupen.com/english/advisories/2011/0132Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/64748
https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLogPatch

Timeline

Published: Jan 19, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-0427?

How severe is CVE-2011-0427?

Severity scoring for CVE-2011-0427 is pending analysis. The EPSS model estimates a 4.44% probability of exploitation in the next 30 days.

How do I fix CVE-2011-0427?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-0427?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST