Bug 1629985 - mgetty: Out-of-bound access in putwhitespan() function g3/g32pbm.c
Summary: mgetty: Out-of-bound access in putwhitespan() function g3/g32pbm.c
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1629986
Blocks: 1629987
TreeView+ depends on / blocked
 
Reported: 2018-09-17 17:50 UTC by Pedro Sampaio
Modified: 2019-09-29 14:58 UTC (History)
8 users (show)

Fixed In Version: mgetty 1.2.1
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-10-22 09:49:42 UTC
Embargoed:

Attachments (Terms of Use)
upstream patch (535 bytes, patch)
2018-09-24 08:48 UTC, Riccardo Schirone 		no flags Details | Diff
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Description Pedro Sampaio 2018-09-17 17:50:29 UTC 
When converting pbm files using g3/pbm2g3.c, out of bounds accesses can occur with malformed input files in putwhitespan().

References:

https://www.x41-dsec.de/lab/advisories/x41-2018-007-mgetty
Comment 1 Pedro Sampaio 2018-09-17 17:50:58 UTC 
Created mgetty tracking bugs for this issue:

Affects: fedora-all [bug 1629986]
Comment 2 Riccardo Schirone 2018-09-24 08:44:32 UTC 
The main function in g3/pbm2g3.c does not check whether `xsize` and `ysize` variables are negative, which result in an out-of-bounds read in putwhitespan() when called from convert_pbm().
Comment 3 Riccardo Schirone 2018-09-24 08:48:34 UTC 
Created attachment 1486347 [details]
upstream patch

This patch was extracted from mgetty-1.2.1.
Comment 4 Riccardo Schirone 2018-10-22 09:49:42 UTC 
Closing as NOTABUG as it was not deemed to be CVE-worthy.
Comment 5 Fedora Update System 2019-02-27 01:15:33 UTC 
mgetty-1.1.37-10.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2019-02-27 03:28:23 UTC 
mgetty-1.1.37-11.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.
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