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Fencer Intel
medium 4.3

CVE-2013-1620 json

The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant…

published 13y ago modified 4mo ago also EUVD-2013-1655

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.

Patch / fix

  • mozilla network_security_services 3.14.3
  • nss Debian 14, Debian 13, Debian 12 2:3.14.3-1

debian advisories DEBIAN-CVE-2013-1620

  • rhev-hypervisor6 RHEL 6 6.4-20130815.0.el6_4
  • nss RHEL 5 3.14.3-6.el5_9
  • nspr RHEL 5 4.9.5-1.el5_9
  • nss-tools RHEL 5 3.14.3-6.el5_9
  • nspr RHEL 6 4.9.5-2.el6_4
  • nss RHEL 6 3.14.3-4.el6_4
  • nss-util RHEL 6 3.14.3-3.el6_4
  • nss-tools RHEL 6 3.14.3-4.el6_4

red hat advisories RHSA-2013:1181RHSA-2013:1135RHSA-2013:1144

  • mozilla-nss openSUSE Tumbleweed 3.26.2-1.1

opensuse advisories openSUSE-SU-2024:10451-1

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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-2013-1620 updated cvss 5.1

nss: TLS CBC padding timing attack

  • Red Hat Enterprise Linux (v. 5 server) nspr 4.9.5-1.el5_9, nss 3.14.3-6.el5_9, nss-tools 3.14.3-6.el5_9
    fixed: vendor fix RHSA-2013:1135
  • Red Hat Enterprise Linux Desktop (v. 6) nspr 4.9.5-2.el6_4, nss 3.14.3-4.el6_4, nss-util 3.14.3-3.el6_4, nss-tools 3.14.3-4.el6_4, nss-softokn 3.14.3-3.el6_4, nss-sysinit 3.14.3-4.el6_4, +1 more Red Hat Enterprise Linux Desktop Optional (v. 6) nspr 4.9.5-2.el6_4, nss 3.14.3-4.el6_4, nss-util 3.14.3-3.el6_4, nss-softokn 3.14.3-3.el6_4 Red Hat Enterprise Linux HPC Node (v. 6) nspr 4.9.5-2.el6_4, nss 3.14.3-4.el6_4, nss-util 3.14.3-3.el6_4, nss-tools 3.14.3-4.el6_4, nss-softokn 3.14.3-3.el6_4, nss-sysinit 3.14.3-4.el6_4, +1 more Red Hat Enterprise Linux HPC Node Optional (v. 6) nspr 4.9.5-2.el6_4, nss 3.14.3-4.el6_4, nss-util 3.14.3-3.el6_4, nss-softokn 3.14.3-3.el6_4 Red Hat Enterprise Linux Server (v. 6) nspr 4.9.5-2.el6_4, nss 3.14.3-4.el6_4, nss-util 3.14.3-3.el6_4, nss-tools 3.14.3-4.el6_4, nss-softokn 3.14.3-3.el6_4, nss-sysinit 3.14.3-4.el6_4, +1 more Red Hat Enterprise Linux Server Optional (v. 6) nss 3.14.3-4.el6_4
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) nspr 4.9.5-2.el6_4, nss 3.14.3-4.el6_4, nss-util 3.14.3-3.el6_4, nss-tools 3.14.3-4.el6_4, nss-softokn 3.14.3-3.el6_4, nss-sysinit 3.14.3-4.el6_4, +1 more Red Hat Enterprise Linux Workstation Optional (v. 6) nss 3.14.3-4.el6_4
    fixed: vendor fix RHSA-2013:1144
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.4-20130815.0.el6_4
    fixed: vendor fix RHSA-2013:1181

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

3.72% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

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.