5.3

CVE-2021-28963: debian debian_linux Injection

CVSS: 5.3v3.1MediumModified
AliasesUBUNTU-CVE-2021-28963USN-4925-1DEBIAN-CVE-2021-28963
Published 22-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-28963 is a medium (CVSS 5.3) Injection vulnerability in debian debian_linux. EPSS estimates a 1.31% chance of exploitation in the next 30 days, higher than 70.1% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 22-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Shibboleth Service Provider before 3.2.1 allows content injection because template generation uses attacker-controlled parameters.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.31%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.31% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian3 products
  • shibboleth-sp< 3.2.1+dfsg1-1 | < 3.0.4+dfsg1-1+deb10u1
  • shibboleth-sp2< 2.6.0+dfsg1-4+deb9u2
  • debian_linuxEOL10.0
Ubuntu2 products
  • shibboleth-sp< 3.0.4+dfsg1-1ubuntu0.1 | All versions (No fix recorded)
  • shibboleth-sp2All versions (No fix recorded)
Shibboleth1 product

3 vendors · 6 products

References

10 links