CVE-2017-5396: debian debian_linux Use After Free
CVSS: 9.8v3.0CriticalModified
AliasesUBUNTU-CVE-2017-5396DEBIAN-CVE-2017-5396
Published 11-06-2018Last modified 05-08-2024
Vulnerability summary
CVE-2017-5396 is a critical (CVSS 9.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 4.01% chance of exploitation in the next 30 days, higher than 90.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
4.01%
0%100%
Low · -0.08 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 18 · Related 9Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
4.01%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
-0.08 pp
From 4.10% on 19-09-2026
19-09-202619-10-2026
EPSS score4.01%
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_linuxEOL5.0 | 6.0 | 7.0
- enterprise_linux_desktop5.0 | 6.0 | 7.0
- enterprise_linux_server5.0 | 6.0 | 7.0
- enterprise_linux_server_aus7.3 | 7.4
- enterprise_linux_server_eus7.3 | 7.4 | 7.5
Mozilla3 products
- firefox≥ unspecified, < 51 | < 51.0 | < 45.7.0
- firefox_esr≥ unspecified, < 45.7
- thunderbird≥ unspecified, < 45.7 | < 45.7.0
Debian2 products
- firefox-esr< 45.7.0esr-1
- debian_linuxEOL8.0
Ubuntu2 products
- firefox< 51.0.1+build2-0ubuntu0.14.04.1 | < 51.0.1+build2-0ubuntu0.16.04.1
- thunderbird< 1:45.7.0+build1-0ubuntu0.14.04.1 | < 1:45.7.0+build1-0ubuntu0.16.04.1
4 vendors · 13 products
References
19 links
- bugzilla.mozilla.org/show_bug.cgi?id=1329403X Refsource CONFIRMExploitIssue TrackingPatchVendor Advisory