CVE-2016-8734
Published: 30 November 2016
Apache Subversion's mod_dontdothat module and HTTP clients 1.4.0 through 1.8.16, and 1.9.0 through 1.9.4 are vulnerable to a denial-of-service attack caused by exponential XML entity expansion. The attack can cause the targeted process to consume an excessive amount of CPU resources or memory.
From the Ubuntu security team
Florian Weimer discovered that Subversion clients did not properly restrict XML entity expansion when accessing http(s):// URLs. A remote attacker could use this to cause a denial of service.
Notes
| Author | Note |
|---|---|
| mdeslaur | for mod_dontdothat, we don't ship it in binary packages for clients, we build with serf, so we're vulnerable |
Priority
Low
CVSS 3 base score: 6.5
Status
| Package | Release | Status |
|---|---|---|
|
subversion Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(1.9.5-1ubuntu1)
|
| bionic |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
| cosmic |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
| disco |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
| eoan |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
| focal |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
| groovy |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
| hirsute |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
| precise |
Ignored
(end of ESM support, was needed)
|
|
| trusty |
Does not exist
(trusty was released [1.8.8-1ubuntu3.3])
|
|
| upstream |
Released
(1.9.5-1, 1.8.17, 1.9.5)
|
|
| xenial |
Released
(1.9.3-2ubuntu1.1)
|
|
| yakkety |
Ignored
(reached end-of-life)
|
|
| zesty |
Not vulnerable
(1.9.5-1ubuntu1)
|
|
|
Patches: upstream: https://subversion.apache.org/security/CVE-2016-8734-advisory.txt |
||