5.8

CVE-2011-2768: tor

Modified
AliasesDEBIAN-CVE-2011-2768
Published 23-12-2011Last modified 06-08-2024

Vulnerability summary

CVE-2011-2768 is a medium (CVSS 5.8) vulnerability in tor. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 54% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.8/10
010
Medium · v2.0 (NVD)
EPSS score
0.72%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
DSA-2331-1OPENSUSE-SU-2024:10423-1

Timeline

  1. 23-12-2011
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.72% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • tor< 0.2.2.34-1
Tor1 product
  • tor≤ 0.2.2.33 | 0.0.2 | 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 | 0.1.0.18 | 0.1.0.19 | 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 | 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 | 0.2.1.11:alpha | 0.2.1.12:alpha | 0.2.1.1.3:alpha | 0.2.1.1.4:alpha | 0.2.1.1.5:alpha | 0.2.1.1.6:alpha | 0.2.1.1.7:alpha | 0.2.1.1.8:alpha | 0.2.1.1.9:alpha | 0.2.1.1.10:alpha | 0.2.1.1.11:alpha | 0.2.1.1.12 | 0.2.1.1.12:alpha | 0.2.1.1.13 | 0.2.1.1.14 | 0.2.1.1.15 | 0.2.1.1.16 | 0.2.1.1.17 | 0.2.1.1.18 | 0.2.1.1.19 | 0.2.1.1.20 | 0.2.1.1.21 | 0.2.1.1.22 | 0.2.1.1.23 | 0.2.1.1.24 | 0.2.1.1.25 | 0.2.1.1.26 | 0.2.1.1.27 | 0.2.1.1.28 | 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 | 0.2.1.12 | 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 | 0.2.1.28 | 0.2.1.29 | 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 | 0.2.2.29 | 0.2.2.29:beta | 0.2.2.32

2 vendors · 2 products

References

3 links