CVE-2021-43315: Buffer Overflow
First published: Fri Mar 24 2023(Updated: )
A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is essentially caused in PackLinuxElf32::elf_lookup() at p_lx_elf.cpp:5349
Credit: patrick@puiterwijk.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| UPX | <4.0.0 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this heap-based buffer overflow in upx?
The vulnerability ID for this heap-based buffer overflow in upx is CVE-2021-43315.
What is the severity rating for CVE-2021-43315?
The severity rating for CVE-2021-43315 is high with a value of 7.5.
Which version of upx is affected by CVE-2021-43315?
The versions of upx up to and excluding 4.0.0 are affected by CVE-2021-43315.
What is the root cause of buffer overflow in upx?
The buffer overflow in upx is caused by a heap-based buffer overflow in the function get_le32() when the generic pointer 'p' points to an inaccessible address.
Is there a fix available for CVE-2021-43315?
Yes, it is recommended to update upx to a version beyond 4.0.0 to mitigate the vulnerability.
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