CVE-2021-28963
shibboleth-sp - security update
5.3
MEDIUM
CVSS 3.1
EPSS 0.49%
Description
Shibboleth Service Provider before 3.2.1 allows content injection because template generation uses attacker-controlled parameters.
How to fix CVE-2021-28963
To remediate CVE-2021-28963, upgrade the affected package to a fixed version below.
- Debian/shibboleth-sp—upgrade to 3.2.1+dfsg1-1 or later
- Debian/shibboleth-sp—upgrade to 3.0.4+dfsg1-1+deb10u1 or later
- —upgrade to 2.6.0+dfsg1-4+deb9u2 or later
Is CVE-2021-28963 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 3.2.1+dfsg1-1
- from 0, < 3.0.4+dfsg1-1+deb10u1
- from 0, < 2.6.0+dfsg1-4+deb9u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |