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Bug 1209105 - (CVE-2015-1473) CVE-2015-1473 glibc: Stack-overflow in glibc swscanf
CVE-2015-1473 glibc: Stack-overflow in glibc swscanf
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
: ---
: ---
Assigned To: Red Hat Product Security
impact=low,public=20140221,reported=2...
: Reopened, Security
Depends On: 1209106 1209107
Blocks: 1188240 1210268 1262918
  Show dependency tree / graph
 
Reported: 2015-04-06 02:55 EDT by Huzaifa S. Sidhpurwala
Modified: 2016-06-13 07:57 EDT (History)
11 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A stack overflow flaw was found in glibc's swscanf() function. An attacker able to make an application call the swscanf() function could use this flaw to crash that application or, potentially, execute arbitrary code with the permissions of the user running the application.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2015-11-20 00:54:22 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Bugzilla 1188235 None None None Never
Red Hat Product Errata RHSA-2015:2199 normal SHIPPED_LIVE Moderate: glibc security, bug fix, and enhancement update 2015-11-19 03:04:22 EST
Red Hat Product Errata RHSA-2015:2589 normal SHIPPED_LIVE Important: glibc security update 2015-12-09 08:57:25 EST

  None (edit)
Description Huzaifa S. Sidhpurwala 2015-04-06 02:55:10 EDT 
It was found that the malloc fallback logic when running *scanf() does not have happen at the precise moment (scanf choses between heap and stack), this can lead to a stack-overflow in certain configurations.

Reference:

https://security-tracker.debian.org/tracker/CVE-2015-1473
Comment 2 Martin Sebor 2015-06-03 14:08:24 EDT 
This report is a duplicate of bug 1188235 - (CVE-2015-1472) CVE-2015-1472 glibc: heap buffer overflow in glibc swscanf.
Comment 3 Huzaifa S. Sidhpurwala 2015-07-17 02:00:31 EDT 
(In reply to Martin Sebor from comment #2)
> This report is a duplicate of bug 1188235 - (CVE-2015-1472) CVE-2015-1472
> glibc: heap buffer overflow in glibc swscanf.

Not as per debian, see difference between:

https://security-tracker.debian.org/tracker/CVE-2015-1472 and
https://security-tracker.debian.org/tracker/CVE-2015-1473
Comment 5 Martin Sebor 2015-07-17 10:48:07 EDT 
(In reply to Huzaifa S. Sidhpurwala from comment #3)
> Not as per debian, see difference between:
> 
> https://security-tracker.debian.org/tracker/CVE-2015-1472 and
> https://security-tracker.debian.org/tracker/CVE-2015-1473

Sorry, I don't see it. The upstream bug and fix are the same in both:

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=16618
Fix: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5bd80bfe9ca0d955bfbbc002781bc7b01b6bcb06
Comment 6 Vincent Danen 2015-08-22 01:59:37 EDT 
Statement:

This issue does not affect the version of glibc package as shipped with Red Hat Enterprise Linux 5 and 6.
Comment 8 errata-xmlrpc 2015-11-18 23:17:19 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2199 https://rhn.redhat.com/errata/RHSA-2015-2199.html
Comment 9 errata-xmlrpc 2015-12-09 03:58:25 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.1 EUS - Server and Compute Node Only
  Red Hat Enterprise Linux 7.1 EUS  - Server and Compute Node Only

Via RHSA-2015:2589 https://rhn.redhat.com/errata/RHSA-2015-2589.html
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