CVE-2017-17820: Use After Free
First published: Thu Dec 21 2017(Updated: )
In Netwide Assembler (NASM) 2.14rc0, there is a use-after-free in pp_list_one_macro in asm/preproc.c that will lead to a remote denial of service attack, related to mishandling of operand-type errors.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nasm Netwide Assembler | =2.14-rc0 | |
| Canonical Ubuntu Linux | =14.04 | |
| debian/nasm | 2.15.05-1 2.16.01-1 2.16.03-1 |
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Reference Links
- https://bugzilla.nasm.us/show_bug.cgi?id=3392433
- https://usn.ubuntu.com/3694-1/
- https://launchpad.net/bugs/cve/CVE-2017-17820
- https://security-tracker.debian.org/tracker/CVE-2017-17820
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17820
- https://nvd.nist.gov/vuln/detail/CVE-2017-17820
- https://ubuntu.com/security/CVE-2017-17820
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2017-17820.
What is the severity rating of CVE-2017-17820?
The severity rating of CVE-2017-17820 is 5.5 (Medium).
How does the vulnerability in NASM 2.14rc0 manifest?
The vulnerability manifests as a use-after-free in the pp_list_one_macro function in asm/preproc.c.
What is the impact of this vulnerability?
The vulnerability can lead to a remote denial of service attack.
How can I fix the vulnerability in NASM 2.14rc0?
To fix the vulnerability, update NASM to version 2.13.02 or later.
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