CVE-2020-28196
krb5 - security update
7.5
HIGH
CVSS 3.1
EPSS 0.95%
Description
MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.
How to fix CVE-2020-28196
To remediate CVE-2020-28196, upgrade the affected package to a fixed version below.
- Alpine/krb5—upgrade to 1.17.2-r0 or later
- —upgrade to 1.18.3-1 or later
- —upgrade to 1.15-1+deb9u2 or later
- —upgrade to 1.17-3+deb10u1 or later
Is CVE-2020-28196 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 1.17.2-r0
- from 0, < 1.18.3-1
- from 0, < 1.15-1+deb9u2
- from 0, < 1.17-3+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |