Vulnerability Details : CVE-2020-15683
Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-15683
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-15683
1.57%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-15683
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-15683
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-15683
-
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html
[security-announce] openSUSE-SU-2020:1785-1: important: Security updateMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00062.html
[security-announce] openSUSE-SU-2020:1748-1: important: Security updateMailing List;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2020/10/msg00027.html
[SECURITY] [DLA 2416-1] thunderbird security updateMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00057.html
[security-announce] openSUSE-SU-2020:1732-1: important: Security updateMailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html
[security-announce] openSUSE-SU-2020:1780-1: important: Security updateMailing List;Third Party Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-45/
Security Vulnerabilities fixed in Firefox 82 — MozillaRelease Notes;Vendor Advisory
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https://bugzilla.mozilla.org/buglist.cgi?bug_id=1576843%2C1656987%2C1660954%2C1662760%2C1663439%2C1666140
Bug ListBroken Link;Issue Tracking;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-47/
Security Vulnerabilities fixed in Thunderbird 78.4 — MozillaRelease Notes;Vendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-46/
Security Vulnerabilities fixed in Firefox ESR 78.4 — MozillaRelease Notes;Vendor Advisory
-
https://www.debian.org/security/2020/dsa-4780
Debian -- Security Information -- DSA-4780-1 thunderbirdThird Party Advisory
-
https://security.gentoo.org/glsa/202010-08
Mozilla Firefox, Mozilla Thunderbird: Multiple vulnerabilities (GLSA 202010-08) — Gentoo securityThird Party Advisory
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