PublicDateAtUSN: 2016-11-30
Candidate: CVE-2016-8734
PublicDate: 2017-10-16 13:29:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8734
 https://subversion.apache.org/security/CVE-2016-8734-advisory.txt
 https://ubuntu.com/security/notices/USN-3388-1
Description:
 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.
Ubuntu-Description:
 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:
 mdeslaur> for mod_dontdothat, we don't ship it in binary packages
 mdeslaur> for clients, we build with serf, so we're vulnerable
Bugs:
Priority: low
Discovered-by: Florian Weimer
Assigned-to:
CVSS:
 nvd: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H [6.5 MEDIUM]

Patches_subversion:
 upstream: https://subversion.apache.org/security/CVE-2016-8734-advisory.txt
upstream_subversion: released (1.9.5-1, 1.8.17, 1.9.5)
precise_subversion: ignored (reached end-of-life)
precise/esm_subversion: ignored (end of ESM support, was needed)
trusty_subversion: released (1.8.8-1ubuntu3.3)
trusty/esm_subversion: DNE (trusty was released [1.8.8-1ubuntu3.3])
vivid/stable-phone-overlay_subversion: DNE
vivid/ubuntu-core_subversion: DNE
xenial_subversion: released (1.9.3-2ubuntu1.1)
esm-infra/xenial_subversion: released (1.9.3-2ubuntu1.1)
yakkety_subversion: ignored (reached end-of-life)
zesty_subversion: not-affected (1.9.5-1ubuntu1)
artful_subversion: not-affected (1.9.5-1ubuntu1)
bionic_subversion: not-affected (1.9.5-1ubuntu1)
cosmic_subversion: not-affected (1.9.5-1ubuntu1)
disco_subversion: not-affected (1.9.5-1ubuntu1)
eoan_subversion: not-affected (1.9.5-1ubuntu1)
focal_subversion: not-affected (1.9.5-1ubuntu1)
groovy_subversion: not-affected (1.9.5-1ubuntu1)
hirsute_subversion: not-affected (1.9.5-1ubuntu1)
devel_subversion: not-affected (1.9.5-1ubuntu1)