CVE-2021-33294
First published: Tue Jul 18 2023(Updated: )
In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows attackers to cause a denial of service (infinite loop) via crafted file.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/elfutils | <=0.183-1 | 0.188-2.1 0.192-4 |
| CentOS Elfutils | =0.183 |
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Reference Links
- https://sourceware.org/pipermail/elfutils-devel/2021q1/003607.html
- https://sourceware.org/bugzilla/show_bug.cgi?id=27501
- https://launchpad.net/bugs/cve/CVE-2021-33294
- https://sourceware.org/git/?p=elfutils.git;a=commit;h=480b6fa3662ba8ffeee274bf0d37423413c01e55
- https://security-tracker.debian.org/tracker/CVE-2021-33294
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33294
- https://nvd.nist.gov/vuln/detail/CVE-2021-33294
- https://ubuntu.com/security/CVE-2021-33294
Frequently Asked Questions
What is the severity of CVE-2021-33294?
CVE-2021-33294 has been classified as a denial of service vulnerability due to an infinite loop in the elfutils library.
How do I fix CVE-2021-33294?
To fix CVE-2021-33294, upgrade elfutils to version 0.188-2.1 or later, or 0.192-4 or later.
What software is affected by CVE-2021-33294?
CVE-2021-33294 affects elfutils version 0.183 and older versions prior to 0.188-2.1 and 0.192-4.
What kind of attack can exploit CVE-2021-33294?
CVE-2021-33294 can be exploited to cause a denial of service through crafted ELF files leading to an infinite loop.
Is CVE-2021-33294 publicly known?
Yes, CVE-2021-33294 is publicly documented and reported in the elfutils project communications.
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