PT-2020-5518 · Postsrsd+2 · Postsrsd+2

Roehling · Published 2020-12-12 · Updated 2024-06-15 · CVE-2020-35573

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions PostSRSd versions prior to 1.10

Description The issue in the srs2.c file of PostSRSd allows remote attackers to cause a denial of service by consuming CPU resources. This can be achieved via a long timestamp tag in an SRS address. The exploitation of this issue may lead to a denial of service due to uncontrolled resource consumption.

Recommendations For versions prior to 1.10, update to version 1.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the srs2.c file or disabling the functionality that handles SRS addresses with timestamp tags until a patch is available.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-834

CWE-400

Related Identifiers

BDU:2021-01030

CVE-2020-35573

DLA-2502-1

OPENSUSE-SU-2021:0646-1

OPENSUSE-SU-2021:0669-1

OPENSUSE-SU-2021:1642-1

OPENSUSE-SU-2021_0646-1

OPENSUSE-SU-2024:11188-1

USN-4730-1

Affected Products

Postsrsd

Suse

Ubuntu

References · 29

• https://github.com/roehling/postsrsd/commit/4733fb11f6bec6524bb8518c5e1a699288c26bac · Patch
• https://cve.org/CVERecord?id=CVE-2020-35573 · Security Note
• https://ubuntu.com/security/CVE-2020-35573?_ga=2.99211230.113542731.1612758940-997510329.1585215282 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0646-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35573 · Security Note
• https://ubuntu.com/security/CVE-2020-35573 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0669-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:1642-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01030 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-35573 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2502-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-35573 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4730-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202107-08 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11188-1 · Vendor Advisory