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Fencer Intel
high 7.5

CVE-2020-35573 json

srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU consumption) via a long timestamp tag in an SRS ad…

published 5y ago modified 4mo ago also EUVD-2020-23239

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU consumption) via a long timestamp tag in an SRS address.

Patch / fix

  • postsrsd_project postsrsd 1.10
  • postsrsd Debian 14, Debian 13, Debian 12 1.10-1

debian advisories DEBIAN-CVE-2020-35573

  • postsrsd Ubuntu 18.04 LTS 1.4-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2020-35573

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • postsrsd openSUSE Tumbleweed 1.11-1.3
  • postsrsd Package Hub 15 SP3, openSUSE Leap 15.3 1.11-bp153.2.3.1
  • postsrsd Package Hub 15 SP2 1.11-bp152.4.3.1
  • postsrsd openSUSE Leap 15.2 1.11-lp152.4.3.1

opensuse advisories openSUSE-SU-2024:11188-1openSUSE-SU-2021:1642-1openSUSE-SU-2021:0669-1openSUSE-SU-2021:0646-1

  • postsrsd Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 1.6-r4

alpine advisories ALPINE-CVE-2020-35573

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2020-35573 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-35573 updated cvss 7.5

postsrsd: specially crafted SRS address could lead to DoS

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.69% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.