CVE-2020-12417: canonical ubuntu_linux Reachable Assertion
CVSS: 9.3v2.0HighModified
AliasesUBUNTU-CVE-2020-12417DEBIAN-CVE-2020-12417
Published 09-07-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-12417 is a high (CVSS 9.3) Reachable Assertion vulnerability in canonical ubuntu_linux. EPSS estimates a 2.68% chance of exploitation in the next 30 days, higher than 85.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.3/10
010
High · v2.0 (NVD)EPSS score
2.68%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 24 · Related 13DSA-4713-1DSA-4718-1MGASA-2020-0274OPENSUSE-SU-2020:0967-1OPENSUSE-SU-2020:0982-1OPENSUSE-SU-2020:0983-1OPENSUSE-SU-2020:1017-1OPENSUSE-SU-2024:10600-1OPENSUSE-SU-2024:10601-1OPENSUSE-SU-2024:14572-1RHSA-2020:2825RHSA-2020:2826RHSA-2020:2827RHSA-2020:2828RHSA-2020:2906RHSA-2020:2907RHSA-2020:3038RHSA-2020:3046SUSE-SU-2020:14421-1SUSE-SU-2020:1898-1SUSE-SU-2020:1899-1SUSE-SU-2020:1900-1USN-4408-1USN-4421-1
Timeline
- 09-07-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash. *Note: this issue only affects Firefox on ARM64 platforms.* This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.8Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
High 9.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
2.68%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
0.00 pp
From 2.68% on 19-09-2026
19-09-202619-10-2026
EPSS score2.68%
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 cause- CWE-617Reachable AssertionThe product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
- CWE-681Incorrect Conversion between Numeric TypesWhen converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Ubuntu5 products
- firefox< 78.0.1+build1-0ubuntu0.16.04.1 | < 78.0.1+build1-0ubuntu0.18.04.1 | < 78.0.1+build1-0ubuntu0.20.04.1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
- thunderbird< 1:68.10.0+build1-0ubuntu0.16.04.1 | < 1:68.10.0+build1-0ubuntu0.18.04.1 | < 1:68.10.0+build1-0ubuntu0.20.04.1
Mozilla3 products
- firefox≥ unspecified, < 78 | < 78.0
- firefox_esr≥ unspecified, < 68.10 | < 68.10.0
- thunderbird≥ unspecified, < 68.10.0 | < 68.10.0
Debian2 products
- firefox-esr< 68.10.0esr-1
- thunderbird< 1:68.10.0-1
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.10 | 20.04
Opensuse1 product
- leapEOL15.1 | 15.2
5 vendors · 12 products
References
18 links- lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
