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

published January 8, 2020

CVSS
—
EPSS
2%
Percentile
76.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01646 · 76.3th percentile
Published
2020-01-08T19:48Z
EPSS history
Timeline
  • 08 JAN 19:48Z
    An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack
    cvelistv5