Vulnerability Details : CVE-2020-15659
Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2020-15659
Probability of exploitation activity in the next 30 days: 0.54%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 74 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-15659
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
9.3
|
HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C |
8.6
|
10.0
|
NIST |
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2020-15659
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The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-15659
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html
[security-announce] openSUSE-SU-2020:1189-1: important: Security updateMailing List;Patch;Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-31/
Security Vulnerabilities fixed in Firefox ESR 68.11 — MozillaVendor Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.html
[security-announce] openSUSE-SU-2020:1179-1: important: Security updateMailing List;Patch;Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-32/
Security Vulnerabilities fixed in Firefox ESR 78.1 — MozillaVendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-35/
Security Vulnerabilities fixed in Thunderbird 68.11 — MozillaVendor Advisory
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https://bugzilla.mozilla.org/buglist.cgi?bug_id=1550133%2C1633880%2C1643613%2C1644839%2C1645835%2C1646006%2C1646787%2C1649347%2C1650811%2C1651678
Bug ListIssue Tracking;Permissions Required;Vendor Advisory
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https://usn.ubuntu.com/4443-1/
USN-4443-1: Firefox vulnerabilities | Ubuntu security notices | UbuntuPatch;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.html
[security-announce] openSUSE-SU-2020:1205-1: important: Security updateMailing List;Patch;Third Party Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-33/
Security Vulnerabilities fixed in Thunderbird 78.1 — MozillaVendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-30/
Security Vulnerabilities fixed in Firefox 79 — MozillaVendor Advisory
Products affected by CVE-2020-15659
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*