6.8

CVE-2016-2167: apache subversion Improper Access Control

CVSS: 6.8v3.0MediumModified
AliasesUBUNTU-CVE-2016-2167DEBIAN-CVE-2016-2167
Published 05-05-2016Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2016-2167 is a medium (CVSS 6.8) Improper Access Control vulnerability in apache subversion. EPSS estimates a 6.81% chance of exploitation in the next 30 days, higher than 93.9% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v3.0 (NVD)
EPSS score
6.81%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 5
DLA-448-1DSA-3561-1MGASA-2016-0161OPENSUSE-SU-2024:10538-1SUSE-SU-2016:1249-1SUSE-SU-2016:1511-1

Timeline

  1. 05-05-2016
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

6.81%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

0.00 pp

From 6.81% on 18-09-2026

18-09-202618-10-2026
EPSS score
6.81%

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

Apache1 product
  • subversionEOL≤ 1.8.15 | 1.9.0 | 1.9.1 | 1.9.2 | 1.9.3
Debian1 product
  • subversion< 1.9.4-1
Ubuntu1 product
  • subversion< 1.8.8-1ubuntu3.3 | < 1.9.3-2ubuntu1.1

3 vendors · 3 products

References

18 links
Show all 18 references