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CVE-2020-9495 Apache Archiva

Affected softwareApache Archiva
Severity5.3 Medium CVSS 3.1 2 scores
Fixed in2.2.5
WeaknessCWE-74
Published19 Jun 2020
Updated17 Jun 2026

Description

Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.

Exploitation status

Proof of concept only

A proof of concept exists, but no reviewed exploit catalogue lists this CVE.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC 1 indexed Published artifacts you can open, in GitHub PoC; first seen 2020-07-29.
  • EPSS 8.1% chance in 30 days
IndexArtifactStarsFirst seen
GitHub PoC ggolawski/CVE-2020-9495 8 2020-07-29

Waratek protection

Mitigation candidate

A kind of vulnerability Waratek's rules address, with exploit code published or exploitation reported. No rule exists and none is planned yet. The decision below says what we found to build a rule from.

  • Protection none
  • Action unverified
  • Review automated Inferred
  • Record active
Decided by The affected package being open source on Maven, so the fix can be read
Finding This CVE affects an open-source Java library published on Maven Central (Maven packages: org.apache.archiva:archiva), so it is squarely in ARMR's territory and the source needed to understand the defect is public. That makes it a candidate for an ARMR patch rule. No rule exists and none is scheduled: the diff between the affected and fixed versions has not been read, and a closer look may find no hook point ARMR can act on.

CVSS

5.3 MEDIUM v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:P/I:N/A:N NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.archiva:archiva 0 2.2.5 unbounded

Products and versions

2 products, 2 version entries
SourceVendorProductSchemeAffected versions
nvd apache archiva generic < 2.2.5
osv org.apache.archiva archiva generic < 2.2.5

References

URLTags
https://lists.apache.org/thread.html/r576eaabe3f772c045ec832a0200252494a2ce3f188f59450dd8f9b6d@%3Cannounce.apache.org%3E WEB
https://lists.apache.org/thread.html/r576eaabe3f772c045ec832a0200252494a2ce3f188f59450dd8f9b6d@%3Cdev.archiva.apache.org%3E WEB
https://lists.apache.org/thread.html/r576eaabe3f772c045ec832a0200252494a2ce3f188f59450dd8f9b6d@%3Cusers.archiva.apache.org%3E WEB
https://lists.apache.org/thread.html/r7ae580f700ade57b00641a70a5c639a3ba576893bbf7f9fd93bc491d@%3Cusers.maven.apache.org%3E WEB
http://archiva.apache.org/security.html#CVE-2020-9495 WEB
http://www.openwall.com/lists/oss-security/2020/06/19/1 WEB
https://lists.apache.org/thread.html/r576eaabe3f772c045ec832a0200252494a2ce3f188f59450dd8f9b6d%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/r576eaabe3f772c045ec832a0200252494a2ce3f188f59450dd8f9b6d%40%3Cdev.archiva.apache.org%3E
https://lists.apache.org/thread.html/r576eaabe3f772c045ec832a0200252494a2ce3f188f59450dd8f9b6d%40%3Cusers.archiva.apache.org%3E
https://lists.apache.org/thread.html/r7ae580f700ade57b00641a70a5c639a3ba576893bbf7f9fd93bc491d%40%3Cusers.maven.apache.org%3E

Timeline

Published2020-06-19By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.