Bug 1478913 - nasm: "paste_tokens()" heap-based buffer overflow
nasm: "paste_tokens()" heap-based buffer overflow
Status: CLOSED WONTFIX
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=20170624,repor...
: Security
Depends On:
Blocks: 1472886
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Reported: 2017-08-07 09:34 EDT by Stefan Cornelius
Modified: 2017-08-07 09:41 EDT (History)
3 users (show)

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Last Closed: 2017-08-07 09:41:06 EDT
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Description Stefan Cornelius 2017-08-07 09:34:36 EDT
A heap-based buffer overflow was reported in the "paste_tokens()" function in asm/preproc.c of nasm. An attacker could exploit this flaw to cause a crash or, possible, execute arbitrary code by tricking a user to process a specially crafted file using nasm.

External references:

Upstream bug report:
https://bugzilla.nasm.us/show_bug.cgi?id=3392415

Patch:
http://repo.or.cz/nasm.git/blobdiff/20d9c86eb1e088efe0093b31f6fb0952971566f1..f9ec5bbd2af6ff5276f1fd5ab52df4ed7b096344:/asm/preproc.c
Comment 2 Stefan Cornelius 2017-08-07 09:41:13 EDT
Statement:

Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

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