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Bug 1300299 - (CVE-2015-8776) CVE-2015-8776 glibc: Segmentation fault caused by passing out-of-range data to strftime()
CVE-2015-8776 glibc: Segmentation fault caused by passing out-of-range data t...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20150920,repor...
: Security
Depends On: 1300300 1358011 1374658
Blocks: 1300316 1386080 1415638
  Show dependency tree / graph
 
Reported: 2016-01-20 07:42 EST by Adam Mariš
Modified: 2017-08-01 14:12 EDT (History)
22 users (show)

See Also:
Fixed In Version: glibc 2.23
Doc Type: Bug Fix
Doc Text:
It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure.
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Sourceware 18985 None None None 2016-01-20 07:52 EST
Red Hat Product Errata RHSA-2017:0680 normal SHIPPED_LIVE Moderate: glibc security and bug fix update 2017-03-21 08:36:34 EDT
Red Hat Product Errata RHSA-2017:1916 normal SHIPPED_LIVE Moderate: glibc security, bug fix, and enhancement update 2017-08-01 14:05:43 EDT

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Description Adam Mariš 2016-01-20 07:42:55 EST 
It was found that out-of-range time values passed to the strftime function may cause it to crash, leading to a denial of service, or potentially disclosure information.

Upstream bug:

https://sourceware.org/bugzilla/show_bug.cgi?id=18985

CVE assignment:

http://seclists.org/oss-sec/2016/q1/153
Comment 1 Adam Mariš 2016-01-20 07:45:19 EST 
Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1300300]
Comment 2 Huzaifa S. Sidhpurwala 2016-01-21 02:52:30 EST 
Upstream commit at:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d36c75fc0d44deec29635dd239b0fbd206ca49b7
Comment 6 Martin Prpič 2016-07-07 03:56:39 EDT 
Mitigation:

Check time values before they are passed to strftime, or call strftime only with struct tm values computed by gmtime or localtime.
Comment 8 errata-xmlrpc 2017-03-21 06:35:11 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0680 https://rhn.redhat.com/errata/RHSA-2017-0680.html
Comment 10 errata-xmlrpc 2017-08-01 14:12:47 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1916 https://access.redhat.com/errata/RHSA-2017:1916
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