CVE-2019-11745
nss - security update
8.8
HIGH
CVSS 3.1
EPSS 0.94%
Description
When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a small out of bounds write could occur. This could have caused heap corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
How to fix CVE-2019-11745
To remediate CVE-2019-11745, upgrade the affected package to a fixed version below.
- —upgrade to 3.44.3-r0 or later
- —upgrade to 2:3.47.1-1 or later
- —upgrade to 2:3.26-1+debu8u7 or later
- —upgrade to 2:3.42.1-1+deb10u2 or later
Is CVE-2019-11745 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 3.44.3-r0
- from 0, < 2:3.47.1-1
- from 0, < 2:3.26-1+debu8u7
- from 0, < 2:3.42.1-1+deb10u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |