Out-of-bounds Read Affecting openssl package, versions <3.0.8-r4
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Test your applications- Snyk ID SNYK-ALPINE317-OPENSSL-5438697
- published 21 Apr 2023
- disclosed 20 Apr 2023
Introduced: 20 Apr 2023
CVE-2023-1255 Open this link in a new tabHow to fix?
Upgrade Alpine:3.17 openssl to version 3.0.8-r4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Alpine.
See How to fix? for Alpine:3.17 relevant fixed versions and status.
Issue summary: The AES-XTS cipher decryption implementation for 64 bit ARM platform contains a bug that could cause it to read past the input buffer, leading to a crash.
Impact summary: Applications that use the AES-XTS algorithm on the 64 bit ARM platform can crash in rare circumstances. The AES-XTS algorithm is usually used for disk encryption.
The AES-XTS cipher decryption implementation for 64 bit ARM platform will read past the end of the ciphertext buffer if the ciphertext size is 4 mod 5 in 16 byte blocks, e.g. 144 bytes or 1024 bytes. If the memory after the ciphertext buffer is unmapped, this will trigger a crash which results in a denial of service.
If an attacker can control the size and location of the ciphertext buffer being decrypted by an application using AES-XTS on 64 bit ARM, the application is affected. This is fairly unlikely making this issue a Low severity one.
References
- http://www.openwall.com/lists/oss-security/2023/04/20/13
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=02ac9c9420275868472f33b01def01218742b8bb
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bc2f61ad70971869b242fc1cb445b98bad50074a
- https://security.netapp.com/advisory/ntap-20230908-0006/
- https://www.openssl.org/news/secadv/20230419.txt