CVE-2021-20294: Buffer Overflow
First published: Fri Mar 26 2021(Updated: )
A flaw was found in binutils readelf 2.35 program. An attacker who is able to convince a victim using readelf to read a crafted file could trigger a stack buffer overflow, out-of-bounds write of arbitrary data supplied by the attacker. The highest impact of this flaw is to confidentiality, integrity, and availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Binutils | >=2.35<2.35.2 | |
| redhat/binutils | <2.35.2 | 2.35.2 |
Remedy
https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=372dd157272e0674d13372655cc60eaca9c06926
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1943533
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/202208-30
- https://sourceware.org/bugzilla/show_bug.cgi?id=26929
- https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=372dd157272e0674d13372655cc60eaca9c06926
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://sourceware.org/git/?p=binutils-gdb.git%3Ba=patch%3Bh=372dd157272e0674d13372655cc60eaca9c06926
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1943534
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1943535
- https://access.redhat.com/articles/65299
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1943533#c2
Frequently Asked Questions
What is the vulnerability ID for this flaw?
The vulnerability ID for this flaw is CVE-2021-20294.
What is the affected software?
The affected software is GNU Binutils version 2.35 up to version 2.35.2.
What is the severity of CVE-2021-20294?
The severity of CVE-2021-20294 is high with a CVSS score of 7.8.
What is the impact of this vulnerability?
The highest impact of this vulnerability is to confidentiality and integrity.
How can I fix CVE-2021-20294?
It is recommended to update GNU Binutils to version 2.35.2 or apply the necessary patches provided by the vendor.
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