6.8

CVE-2014-8639: mozilla firefox

CVSS: 6.8v2.0MediumModified
AliasesUBUNTU-CVE-2014-8639
Published 14-01-2015Last modified 06-08-2024

Vulnerability summary

CVE-2014-8639 is a medium (CVSS 6.8) vulnerability in mozilla firefox. EPSS estimates a 1.90% chance of exploitation in the next 30 days, higher than 79.3% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v2.0 (NVD)
EPSS score
1.90%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 5

Timeline

  1. 14-01-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and SeaMonkey before 2.32 do not properly interpret Set-Cookie headers within responses that have a 407 (aka Proxy Authentication Required) status code, which allows remote HTTP proxy servers to conduct session fixation attacks by providing a cookie name that corresponds to the session cookie of the origin server.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

1.90%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

0.00 pp

From 1.90% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.90%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Mozilla4 products
Ubuntu2 products
  • firefox< 35.0+build3-0ubuntu0.14.04.2
  • thunderbird< 1:31.4.0+build1-0ubuntu0.14.04.1

2 vendors · 6 products

References

44 links
Show all 44 references