CVE-2017-7807: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2017-7807 is a high (CVSS 8.1) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 2.07% chance of exploitation in the next 30 days, higher than 81% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 17 · Related 8Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the domain. This has been addressed by requiring fallback files be inside the manifest directory. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS trend
Probability
2.07%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
-0.04 pp
From 2.11% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.mozilla.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Redhat6 products
- enterprise_linuxEOL6.0 | 7.0
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus7.3 | 7.4
- enterprise_linux_server_eus7.3 | 7.4 | 7.5
Mozilla3 products
- firefox≥ unspecified, < 55 | < 55.0 | < 52.3.0
- firefox_esr≥ unspecified, < 52.3
- thunderbird≥ unspecified, < 52.3 | < 52.3.0
Debian2 products
- firefox-esr< 52.3.0esr-1
- debian_linuxEOL8.0 | 9.0
Ubuntu2 products
- firefox< 55.0.1+build2-0ubuntu0.14.04.2 | < 55.0.1+build2-0ubuntu0.16.04.2
- thunderbird< 1:52.3.0+build1-0ubuntu0.14.04.1 | < 1:52.3.0+build1-0ubuntu0.16.04.1 | < 1:52.4.0+build1-0ubuntu2
4 vendors · 13 products
References
16 links
- bugzilla.mozilla.org/show_bug.cgi?id=1376459X Refsource CONFIRMExploitIssue TrackingPatchVendor Advisory