VulnerabilityModified
CVE-2011-0491
The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors,…
MEDIUM 5.0EPSS 2.52%
Does this matter?
Lower severity and a low EPSS score (2.52%). Track it; it rarely justifies an emergency change on its own.
Description
The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors, related to "underflow errors."
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 2.52% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- tor/tor
- Source
- cve@mitre.org
References
- http://archives.seul.org/or/announce/Jan-2011/msg00000.htmlPatch
- http://blog.torproject.org/blog/tor-02129-released-security-patchesPatch, Vendor Advisory
- http://www.securityfocus.com/bid/45953
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64888
- https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLogPatch
- https://trac.torproject.org/projects/tor/ticket/2324
- http://archives.seul.org/or/announce/Jan-2011/msg00000.htmlPatch
- http://blog.torproject.org/blog/tor-02129-released-security-patchesPatch, Vendor Advisory
- http://www.securityfocus.com/bid/45953
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64888
- https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLogPatch
- https://trac.torproject.org/projects/tor/ticket/2324
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.