CVE-2021-31826
shibboleth-sp - security update
7.5
HIGH
CVSS 3.1
EPSS 1.5%
Description
Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.
How to fix CVE-2021-31826
To remediate CVE-2021-31826, upgrade the affected package to a fixed version below.
- Debian/shibboleth-sp—upgrade to 3.2.2+dfsg1-1 or later
- —upgrade to 3.0.4+dfsg1-1+deb10u2 or later
Is CVE-2021-31826 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.2.2+dfsg1-1
- from 0, < 3.0.4+dfsg1-1+deb10u2
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 |