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Fencer Intel
high 7.5

CVE-2010-3173 json

The SSL implementation in Mozilla Firefox before 3.5.14 and 3.6.x before 3.6.11, Thunderbird before 3.0.9 and 3.1.x before 3.1.5, and SeaMo…

published 2010-10-21 16 y ago modified 2026-06-16 4 mo ago also EUVD-2010-3173

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

The SSL implementation in Mozilla Firefox before 3.5.14 and 3.6.x before 3.6.11, Thunderbird before 3.0.9 and 3.1.x before 3.1.5, and SeaMonkey before 2.0.9 does not properly set the minimum key length for Diffie-Hellman Ephemeral (DHE) mode, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a brute-force attack.

Patch / fix

  • nss Debian 14, Debian 13, Debian 12 3.12.8-1

debian advisories DEBIAN-CVE-2010-3173

  • firefox RHEL 4 3.6.11-2.el4
  • firefox RHEL 5 3.6.11-2.el5
  • nss RHEL 4 3.12.8-1.el4
  • nss RHEL 5 3.12.8-1.el5
  • nss-tools RHEL 4 3.12.8-1.el4
  • nss-tools RHEL 5 3.12.8-1.el5
  • xulrunner RHEL 5 1.9.2.11-2.el5
  • seamonkey RHEL 3 1.0.9-0.61.el3

red hat advisories RHSA-2010:0782RHSA-2010:0781

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1
  • MozillaThunderbird openSUSE Tumbleweed 45.5.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10071-1openSUSE-SU-2024:10230-1

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-2010-3173 updated cvss 5.1

NSS: insecure Diffie-Hellman key exchange

  • Red Hat Enterprise Linux 4 thunderbird Red Hat Enterprise Linux 5 thunderbird Red Hat Enterprise Linux 6 firefox, thunderbird
    affected: no fix available
  • Red Hat Desktop version 3 seamonkey 1.0.9-0.61.el3, seamonkey-nss 1.0.9-0.61.el3, seamonkey-chat 1.0.9-0.61.el3, seamonkey-mail 1.0.9-0.61.el3, seamonkey-nspr 1.0.9-0.61.el3, seamonkey-js-debugger 1.0.9-0.61.el3, +1 more
    fixed: vendor fix RHSA-2010:0781
  • Red Hat Enterprise Linux (v. 5 server) nss 3.12.8-1.el5, firefox 3.6.11-2.el5, nss-tools 3.12.8-1.el5, xulrunner 1.9.2.11-2.el5
    fixed: vendor fix RHSA-2010:0782
  • Red Hat Enterprise Linux AS version 3 seamonkey 1.0.9-0.61.el3, seamonkey-nss 1.0.9-0.61.el3, seamonkey-chat 1.0.9-0.61.el3, seamonkey-mail 1.0.9-0.61.el3, seamonkey-nspr 1.0.9-0.61.el3, seamonkey-js-debugger 1.0.9-0.61.el3, +1 more Red Hat Enterprise Linux AS version 4 nss 3.12.8-1.el4, firefox 3.6.11-2.el4, nss-tools 3.12.8-1.el4, seamonkey 1.0.9-64.el4, seamonkey-chat 1.0.9-64.el4, seamonkey-mail 1.0.9-64.el4, +2 more
    fixed: vendor fix RHSA-2010:0781
  • Red Hat Enterprise Linux Desktop (v. 5 client) nss 3.12.8-1.el5, firefox 3.6.11-2.el5, nss-tools 3.12.8-1.el5, xulrunner 1.9.2.11-2.el5
    fixed: vendor fix RHSA-2010:0782
  • Red Hat Enterprise Linux Desktop version 4 nss 3.12.8-1.el4, firefox 3.6.11-2.el4, nss-tools 3.12.8-1.el4, seamonkey 1.0.9-64.el4, seamonkey-chat 1.0.9-64.el4, seamonkey-mail 1.0.9-64.el4, +2 more
    fixed: vendor fix RHSA-2010:0781
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) nss 3.12.8-1.el5, xulrunner 1.9.2.11-2.el5
    fixed: vendor fix RHSA-2010:0782
  • Red Hat Enterprise Linux ES version 3 seamonkey 1.0.9-0.61.el3, seamonkey-nss 1.0.9-0.61.el3, seamonkey-chat 1.0.9-0.61.el3, seamonkey-mail 1.0.9-0.61.el3, seamonkey-nspr 1.0.9-0.61.el3, seamonkey-js-debugger 1.0.9-0.61.el3, +1 more Red Hat Enterprise Linux ES version 4 nss 3.12.8-1.el4, firefox 3.6.11-2.el4, nss-tools 3.12.8-1.el4, seamonkey 1.0.9-64.el4, seamonkey-chat 1.0.9-64.el4, seamonkey-mail 1.0.9-64.el4, +2 more Red Hat Enterprise Linux WS version 3 seamonkey 1.0.9-0.61.el3, seamonkey-nss 1.0.9-0.61.el3, seamonkey-chat 1.0.9-0.61.el3, seamonkey-mail 1.0.9-0.61.el3, seamonkey-nspr 1.0.9-0.61.el3, seamonkey-js-debugger 1.0.9-0.61.el3, +1 more Red Hat Enterprise Linux WS version 4 nss 3.12.8-1.el4, firefox 3.6.11-2.el4, nss-tools 3.12.8-1.el4, seamonkey 1.0.9-64.el4, seamonkey-chat 1.0.9-64.el4, seamonkey-mail 1.0.9-64.el4, +2 more
    fixed: vendor fix RHSA-2010:0781

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

3.04% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/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.