CVE-2011-0491 describes a denial-of-service vulnerability in the tor_realloc function of Tor versions prior to 0.2.1.29 and 0.2.2.21-alpha. This flaw, stemming from improper size validation during memory allocation, could allow remote attackers to crash the Tor daemon through unspecified vectors related to "underflow errors." With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P), it indicates a low-complexity attack that can be launched remotely without authentication, leading to a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.2.1.28CPE matchmatch criteria | cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:* | ||
0.0.2CPE matchmatch criteria | cpe:2.3:a:tor:tor:0.0.2:*:*:*:*:*:*:* | ||
0.0.2_pre13CPE matchmatch criteria | cpe:2.3:a:tor:tor:0.0.2_pre13:*:*:*:*:*:*:* | ||
0.0.2_pre14CPE matchmatch criteria | cpe:2.3:a:tor:tor:0.0.2_pre14:*:*:*:*:*:*:* | ||
0.0.2_pre15CPE matchmatch criteria | cpe:2.3:a:tor:tor:0.0.2_pre15:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.