PublicDateAtUSN: 2017-07-13
Candidate: CVE-2017-9788
PublicDate: 2017-07-13 16:29:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9788
 https://httpd.apache.org/security/vulnerabilities_22.html
 https://httpd.apache.org/security/vulnerabilities_24.html
 https://lists.apache.org/thread.html/0dd69204a6bd643cc4e9ccd008f07a9375525d977c6ebeb07a881afb@%3Cannounce.httpd.apache.org%3E
 https://ubuntu.com/security/notices/USN-3370-1
 https://ubuntu.com/security/notices/USN-3370-2
Description:
 In Apache httpd before 2.2.34 and 2.4.x before 2.4.27, the value
 placeholder in [Proxy-]Authorization headers of type 'Digest' was not
 initialized or reset before or between successive key=value assignments by
 mod_auth_digest. Providing an initial key with no '=' assignment could
 reflect the stale value of uninitialized pool memory used by the prior
 request, leading to leakage of potentially confidential information, and a
 segfault in other cases resulting in denial of service.
Ubuntu-Description:
Notes:
Bugs:
Priority: medium
Discovered-by: Robert Święcki
Assigned-to: mdeslaur
CVSS:
 nvd: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H [9.1 CRITICAL]

Patches_apache2:
 upstream: https://github.com/apache/httpd/commit/549ba6a39aa0df78a610025f74f3a06503a70f67 (2.4)
 upstream: https://svn.apache.org/viewvc?view=revision&revision=1800955
upstream_apache2: released (2.4.27)
precise/esm_apache2: released (2.2.22-1ubuntu1.13)
trusty_apache2: released (2.4.7-1ubuntu4.17)
trusty/esm_apache2: released (2.4.7-1ubuntu4.17)
vivid/ubuntu-core_apache2: DNE
xenial_apache2: released (2.4.18-2ubuntu3.4)
esm-infra/xenial_apache2: released (2.4.18-2ubuntu3.4)
yakkety_apache2: ignored (reached end-of-life)
zesty_apache2: released (2.4.25-3ubuntu2.2)
devel_apache2: released (2.4.27-2ubuntu2)