PT-2020-7821 · Tor+1 · Tor+1

Published 2015-03-22 · Updated 2024-06-15 · CVE-2015-2688

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Tor versions 0.2.4.x through 0.2.4.25 Tor versions 0.2.5.x through 0.2.5.10

Description: The issue is related to the buf pullup function in Tor, which does not properly handle unexpected arrival times of buffers with invalid layouts. This allows remote attackers to cause a denial of service, resulting in an assertion failure and daemon exit, via crafted packets.

Recommendations: For Tor versions 0.2.4.x through 0.2.4.25, update to version 0.2.4.26 or later. For Tor versions 0.2.5.x through 0.2.5.10, update to version 0.2.5.11 or later.

Fix

DoS

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

ALT-PU-2015-1317

CVE-2015-2688

DLA-178-1

DSA-3203-1

OPENSUSE-SU-2024:10423-1

Affected Products

Alt Linux

Tor

References · 33

• https://security-tracker.debian.org/tracker/CVE-2015-2688 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10423-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-2688 · Security Note
• https://lists.torproject.org/pipermail/tor-talk/2015-March/037281.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2015-2688 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2015-2688 · Vendor Advisory
• https://trac.torproject.org/projects/tor/ticket/15083 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-2688 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2015-2688 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2015-2688 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3203-1 · Vendor Advisory
• https://suse.com/security/cve/CVE-2012-3518 · Note
• https://suse.com/security/cve/CVE-2012-3517 · Note
• https://suse.com/security/cve/CVE-2011-4895 · Note
• https://suse.com/security/cve/CVE-2015-2688 · Note