CVE-2017-7814: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2017-7814 is a high (CVSS 7.8) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 1.19% chance of exploitation in the next 30 days, higher than 67.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 18 · Related 10Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.19%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
-0.03 pp
From 1.22% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat5 products
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus7.4
- enterprise_linux_server_eus7.4 | 7.5
- enterprise_linux_workstation6.0 | 7.0
Debian3 products
- firefox-esr< 52.4.0esr-2
- thunderbird< 1:52.4.0-1
- debian_linuxEOL7.0 | 8.0 | 9.0
Mozilla3 products
- firefox≥ unspecified, < 56 | < 52.4.0 | < 56.0
- firefox_esr≥ unspecified, < 52.4
- thunderbird≥ unspecified, < 52.4 | < 52.4.0
Ubuntu2 products
- firefox< 56.0+build6-0ubuntu0.14.04.1 | < 56.0+build6-0ubuntu0.16.04.1 | < 56.0+build6-0ubuntu1
- thunderbird< 1:52.4.0+build1-0ubuntu0.14.04.2 | < 1:52.4.0+build1-0ubuntu0.16.04.2 | < 1:52.4.0+build1-0ubuntu2
4 vendors · 13 products
References
18 links
lists.debian.org/debian-lts-announce/2017/11/msg00000.htmlMailing ListX Refsource MLISTThird Party Advisory- bugzilla.mozilla.org/show_bug.cgi?id=1376036X Refsource CONFIRMIssue TrackingPatchThird Party Advisory