Vulnerability Details : CVE-2019-11759
An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
Vulnerability category: OverflowExecute code
Products affected by CVE-2019-11759
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-11759
2.95%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-11759
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
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-2019-11759
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-11759
-
https://www.mozilla.org/security/advisories/mfsa2019-35/
Security vulnerabilities fixed in - Thunderbird 68.2 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2019-34/
Security vulnerabilities fixed in - Firefox 70 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1577953
Access DeniedIssue Tracking;Permissions Required
-
https://usn.ubuntu.com/4335-1/
USN-4335-1: Thunderbird vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2019-33/
Security vulnerabilities fixed in - Firefox ESR 68.2 — MozillaVendor Advisory
-
https://security.gentoo.org/glsa/202003-10
Mozilla Thunderbird: Multiple vulnerabilities (GLSA 202003-10) — Gentoo securityThird Party Advisory
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