CVE-2015-0799: canonical ubuntu_linux Improper Input Validation
Vulnerability summary
CVE-2015-0799 is a medium (CVSS 4.3) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 1.02% chance of exploitation in the next 30 days, higher than 63.4% of scored vulnerabilities.
Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 08-04-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The HTTP Alternative Services feature in Mozilla Firefox before 37.0.1 allows man-in-the-middle attackers to bypass an intended X.509 certificate-verification step for an SSL server by specifying that server in the uri-host field of an Alt-Svc HTTP/2 response header.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
1.02%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
Decrease -0.15 pp
From 1.17% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 14.10
Mozilla1 product
- firefox≤ 37.0
Opensuse1 product
- opensuseEOL13.1 | 13.2
Ubuntu1 product
- firefox< 37.0.1+build1-0ubuntu0.14.04.1
4 vendors · 4 products
References
11 links- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlX Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1148328X Refsource CONFIRM