6.8
MEDIUM
CVE-2016-2167
Apache Subversion Cyrus SASL Authentication Bypass
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.

INFO

Published Date :

May 5, 2016, 6:59 p.m.

Last Modified :

Nov. 7, 2023, 2:31 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

1.6
Affected Products

The following products are affected by CVE-2016-2167 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apache subversion

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-2167 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-2167 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgJet+7_MAhomFVOXPgLtewcUw9w=k9zdPCkq5tvPxVMA%40mail.gmail.com%3E [No types assigned]
    Added Reference Red Hat, Inc. http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgfn1iKueW51EpmXzXi_URNfGNofZSgOyW1_jnSeNm5DQ%40mail.gmail.com%3E [No types assigned]
    Removed Reference Red Hat, Inc. http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgJet+7_MAhomFVOXPgLtewcUw9w=k9zdPCkq5tvPxVMA@mail.gmail.com%3E
    Removed Reference Red Hat, Inc. http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgfn1iKueW51EpmXzXi_URNfGNofZSgOyW1_jnSeNm5DQ@mail.gmail.com%3E
  • CVE Modified by [email protected]

    Oct. 20, 2020

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuoct2020.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201610-05 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 01, 2016

    Action Type Old Value New Value
    Added Reference http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.417496 [No Types Assigned]
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-05/msg00044.html [No Types Assigned]
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-05/msg00043.html [No Types Assigned]
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184545.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/89417 [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 06, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:apache:subversion:1.9.0:*:*:*:*:*:*:* *cpe:2.3:a:apache:subversion:1.9.2:*:*:*:*:*:*:* *cpe:2.3:a:apache:subversion:1.9.1:*:*:*:*:*:*:* *cpe:2.3:a:apache:subversion:1.9.3:*:*:*:*:*:*:* *cpe:2.3:a:apache:subversion:1.8.15:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:M/Au:S/C:P/I:P/A:N)
    Added CVSS V3 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type http://subversion.apache.org/security/CVE-2016-2167-advisory.txt No Types Assigned http://subversion.apache.org/security/CVE-2016-2167-advisory.txt Advisory
    Added CWE CWE-284
  • Initial Analysis by [email protected]

    May. 06, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-2167 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.13 }} 0.00%

score

0.46722

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability