https://bugzilla.redhat.com/show_bug.cgi?id=1668321
Bug ID: 1668321 Summary: CVE-2019-6291 nasm: Recursive calls in the function expr resulting in a denial of service Product: Security Response Hardware: All OS: Linux Status: NEW Whiteboard: impact=moderate,public=20190102,reported=20190115,sour ce=cve,cvss3=5.5/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/ I:N/A:H,cwe=CWE-400,fedora-all/nasm=affected,rhel-5/na sm=new,rhel-6/nasm=new,rhel-7/nasm=new,rhel-8/nasm=new Component: vulnerability Keywords: Security Severity: medium Priority: medium Assignee: security-response-team@redhat.com Reporter: darunesh@redhat.com CC: dominik@greysector.net, java-sig-commits@lists.fedoraproject.org, mizdebsk@redhat.com, nickc@redhat.com Target Milestone: --- Classification: Other
An issue was discovered in the function expr6 in eval.c in Netwide Assembler (NASM) through 2.14.02. There is a stack exhaustion problem caused by the expr6 function making recursive calls to itself in certain scenarios involving lots of '!' or '+' or '-' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted asm file.
Upstream Issue:
https://bugzilla.nasm.us/show_bug.cgi?id=3392549
https://bugzilla.redhat.com/show_bug.cgi?id=1668321
Dhananjay Arunesh darunesh@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Depends On| |1668322
--- Comment #1 from Dhananjay Arunesh darunesh@redhat.com --- Created nasm tracking bugs for this issue:
Affects: fedora-all [bug 1668322]
Referenced Bugs:
https://bugzilla.redhat.com/show_bug.cgi?id=1668322 [Bug 1668322] CVE-2019-6291 nasm: Recursive calls in the function expr resulting in a denial of service [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=1668321
Dhananjay Arunesh darunesh@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Blocks| |1668324
https://bugzilla.redhat.com/show_bug.cgi?id=1668321
Stefan Cornelius scorneli@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Priority|medium |low Whiteboard|impact=moderate,public=2019 |impact=low,public=20190102, |0102,reported=20190115,sour |reported=20190115,source=cv |ce=cve,cvss3=5.5/CVSS:3.0/A |e,cvss3=5.5/CVSS:3.0/AV:L/A |V:L/AC:L/PR:N/UI:R/S:U/C:N/ |C:L/PR:N/UI:R/S:U/C:N/I:N/A |I:N/A:H,cwe=CWE-400,fedora- |:H,cwe=CWE-400,fedora-all/n |all/nasm=affected,rhel-5/na |asm=affected,rhel-5/nasm=ne |sm=new,rhel-6/nasm=new,rhel |w,rhel-6/nasm=new,rhel-7/na |-7/nasm=new,rhel-8/nasm=new |sm=new,rhel-8/nasm=new Severity|medium |low
https://bugzilla.redhat.com/show_bug.cgi?id=1668321
Stefan Cornelius scorneli@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Whiteboard|impact=low,public=20190102, |impact=low,public=20190102, |reported=20190115,source=cv |reported=20190115,source=cv |e,cvss3=5.5/CVSS:3.0/AV:L/A |e,cvss3=5.5/CVSS:3.0/AV:L/A |C:L/PR:N/UI:R/S:U/C:N/I:N/A |C:L/PR:N/UI:R/S:U/C:N/I:N/A |:H,cwe=CWE-400,fedora-all/n |:H,cwe=CWE-400,fedora-all/n |asm=affected,rhel-5/nasm=ne |asm=affected,rhel-5/nasm=wo |w,rhel-6/nasm=new,rhel-7/na |ntfix,rhel-6/nasm=wontfix,r |sm=new,rhel-8/nasm=new |hel-7/nasm=affected,rhel-8/ | |nasm=affected
https://bugzilla.redhat.com/show_bug.cgi?id=1668321
Stefan Cornelius scorneli@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Whiteboard|impact=low,public=20190102, |impact=low,public=20190102, |reported=20190115,source=cv |reported=20190115,source=cv |e,cvss3=5.5/CVSS:3.0/AV:L/A |e,cvss3=5.5/CVSS:3.0/AV:L/A |C:L/PR:N/UI:R/S:U/C:N/I:N/A |C:L/PR:N/UI:R/S:U/C:N/I:N/A |:H,cwe=CWE-400,fedora-all/n |:H,cwe=CWE-400,fedora-all/n |asm=affected,rhel-5/nasm=wo |asm=affected,rhel-5/nasm=wo |ntfix,rhel-6/nasm=wontfix,r |ntfix,rhel-6/nasm=wontfix,r |hel-7/nasm=affected,rhel-8/ |hel-7/nasm=affected,rhel-br |nasm=affected |-8/nasm=affected
https://bugzilla.redhat.com/show_bug.cgi?id=1668321
--- Comment #3 from Stefan Cornelius scorneli@redhat.com --- Statement:
This issue affects the versions of nasm as shipped with Red Hat Enterprise Linux 5, 6, 7, and 8.
Red Hat Enterprise Linux 5 is now in Extended Life Phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having a security impact of Low, and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
https://bugzilla.redhat.com/show_bug.cgi?id=1668321
Stefan Cornelius scorneli@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Depends On| |1716235, 1716234
https://bugzilla.redhat.com/show_bug.cgi?id=1668321 Bug 1668321 depends on bug 1668322, which changed state.
Bug 1668322 Summary: CVE-2019-6291 nasm: Recursive calls in the function expr resulting in a denial of service [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=1668322
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |CLOSED Resolution|--- |EOL
java-sig-commits@lists.fedoraproject.org