5

CVE-2011-0493: tor Numeric Errors

CVSS: 5.0v2.0MediumModified
AliasesDEBIAN-CVE-2011-0493
Published 19-01-2011Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2011-0493 is a medium (CVSS 5.0) Numeric Errors vulnerability in tor. EPSS estimates a 2.52% chance of exploitation in the next 30 days, higher than 84.6% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
2.52%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DSA-2148-1

Timeline

  1. 19-01-2011
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha might allow remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors related to malformed router caches and improper handling of integer values.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.52%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

0.00 pp

From 2.52% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.52%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • tor< 0.2.1.29-1
Tor1 product
  • tor≤ 0.2.1.28 | 0.0.2 | 0.0.2_pre13 | 0.0.2_pre14 | 0.0.2_pre15 | 0.0.2_pre16 | 0.0.2_pre17 | 0.0.2_pre18 | 0.0.2_pre19 | 0.0.2_pre20 | 0.0.2_pre21 | 0.0.2_pre22 | 0.0.2_pre23 | 0.0.2_pre24 | 0.0.2_pre25 | 0.0.2_pre26 | 0.0.2_pre27 | 0.0.3 | 0.0.4 | 0.0.5 | 0.0.6 | 0.0.6.1 | 0.0.6.2 | 0.0.7 | 0.0.7.1 | 0.0.7.2 | 0.0.7.3 | 0.0.8 | 0.0.8.1 | 0.0.9 | 0.0.9.1 | 0.0.9.2 | 0.0.9.3 | 0.0.9.4 | 0.0.9.5 | 0.0.9.6 | 0.0.9.7 | 0.0.9.8 | 0.0.9.9 | 0.0.9.10 | 0.1.0.1 | 0.1.0.2 | 0.1.0.3 | 0.1.0.4 | 0.1.0.5 | 0.1.0.6 | 0.1.0.7 | 0.1.0.8 | 0.1.0.9 | 0.1.0.10 | 0.1.0.11 | 0.1.0.12 | 0.1.0.13 | 0.1.0.14 | 0.1.0.15 | 0.1.0.16 | 0.1.0.17 | 0.1.1 | 0.1.1.1 | 0.1.1.1:alpha | 0.1.1.2 | 0.1.1.2:alpha | 0.1.1.3 | 0.1.1.3:alpha | 0.1.1.4 | 0.1.1.4:alpha | 0.1.1.5 | 0.1.1.5:alpha | 0.1.1.6 | 0.1.1.6:alpha | 0.1.1.7 | 0.1.1.7:alpha | 0.1.1.8 | 0.1.1.8:alpha | 0.1.1.9 | 0.1.1.9:alpha | 0.1.1.10 | 0.1.1.10:alpha | 0.1.1.11 | 0.1.1.12 | 0.1.1.13 | 0.1.1.14 | 0.1.1.15 | 0.1.1.16 | 0.1.1.17 | 0.1.1.18 | 0.1.1.19 | 0.1.1.20 | 0.1.1.21 | 0.1.1.22 | 0.1.1.23 | 0.1.1.25 | 0.1.1.26 | 0.1.2.1:alpha-cvs | 0.1.2.2 | 0.1.2.3:alpha | 0.1.2.4 | 0.1.2.5 | 0.1.2.5:alpha | 0.1.2.6:alpha | 0.1.2.7:alpha | 0.1.2.8:beta | 0.1.2.9 | 0.1.2.10 | 0.1.2.11 | 0.1.2.12 | 0.1.2.13 | 0.1.2.14 | 0.1.2.15 | 0.1.2.16 | 0.1.2.17 | 0.1.2.18 | 0.1.2.19 | 0.1.2.30 | 0.1.2.31 | 0.2.0.1:alpha | 0.2.0.2:alpha | 0.2.0.3:alpha | 0.2.0.4:alpha | 0.2.0.5:alpha | 0.2.0.6:alpha | 0.2.0.7:alpha | 0.2.0.8:alpha | 0.2.0.9:alpha | 0.2.0.10:alpha | 0.2.0.11:alpha | 0.2.0.12:alpha | 0.2.0.13:alpha | 0.2.0.14:alpha | 0.2.0.15:alpha | 0.2.0.16:alpha | 0.2.0.17:alpha | 0.2.0.18:alpha | 0.2.0.19:alpha | 0.2.0.20:alpha | 0.2.0.21:alpha | 0.2.0.22:alpha | 0.2.0.23:alpha | 0.2.0.24:alpha | 0.2.0.25:alpha | 0.2.0.26:alpha | 0.2.0.27:alpha | 0.2.0.28:alpha | 0.2.0.29 | 0.2.0.29:alpha | 0.2.0.30 | 0.2.0.30:alpha | 0.2.0.31 | 0.2.0.31:alpha | 0.2.0.32:alpha | 0.2.0.33 | 0.2.0.34:alpha | 0.2.0.35 | 0.2.1.1:alpha | 0.2.1.2:alpha | 0.2.1.3:alpha | 0.2.1.4:alpha | 0.2.1.5:alpha | 0.2.1.6:alpha | 0.2.1.7:alpha | 0.2.1.8:alpha | 0.2.1.9:alpha | 0.2.1.10:alpha | 0.2.1.11:alpha | 0.2.1.12 | 0.2.1.12:alpha | 0.2.1.13 | 0.2.1.14 | 0.2.1.15 | 0.2.1.16 | 0.2.1.17 | 0.2.1.18 | 0.2.1.19 | 0.2.1.20 | 0.2.1.21 | 0.2.1.22 | 0.2.1.23 | 0.2.1.24 | 0.2.1.25 | 0.2.1.26 | 0.2.1.27 | 0.2.2.1 | 0.2.2.1:alpha | 0.2.2.2 | 0.2.2.2:alpha | 0.2.2.3 | 0.2.2.3:alpha | 0.2.2.4 | 0.2.2.4:alpha | 0.2.2.5 | 0.2.2.5:alpha | 0.2.2.6 | 0.2.2.6:alpha | 0.2.2.7:alpha | 0.2.2.8:alpha | 0.2.2.9:alpha | 0.2.2.10:alpha | 0.2.2.11:alpha | 0.2.2.12:alpha | 0.2.2.13:alpha | 0.2.2.14:alpha | 0.2.2.15:alpha | 0.2.2.16:alpha | 0.2.2.17:alpha | 0.2.2.18:alpha | 0.2.2.19:alpha | 0.2.2.20:alpha

2 vendors · 2 products

References

7 links