Bug 1217633 - VUL-0: CVE-2023-49092: arti: RustCrypto/RSA: Marvin Attack - potential key recovery through timing sidechannels
Summary: VUL-0: CVE-2023-49092: arti: RustCrypto/RSA: Marvin Attack - potential key re...
Status: NEW
Alias: None
Product: openSUSE Tumbleweed
Classification: openSUSE
Component: Security (show other bugs)
Version: Current
Hardware: Other Other
: P3 - Medium : Normal (vote)
Target Milestone: ---
Assignee: Eyad Issa
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/386375/
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Keywords:
Depends on: CVE-2023-49092
Blocks:
  Show dependency tree / graph
 
Reported: 2023-11-29 09:29 UTC by Carlos López
Modified: 2023-11-29 14:10 UTC (History)
4 users (show)

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Found By: Security Response Team
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Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Carlos López 2023-11-29 09:29:07 UTC 
+++ This bug was initially created as a clone of Bug #1217629 +++

RustCrypto/RSA is a portable RSA implementation in pure Rust. Due to a
non-constant-time implementation, information about the private key is leaked
through timing information which is observable over the network. An attacker may
be able to use that information to recover the key. There is currently no fix
available. As a workaround, avoid using the RSA crate in settings where
attackers are able to observe timing information, e.g. local use on a
non-compromised computer.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-49092
Comment 1 Eyad Issa 2023-11-29 14:10:43 UTC 
I reported the issue upstream and the reply was:

> We've chosen to ignore this advisory as Arti doesn't do private key operations with RSA (i.e. it isn't actually impacted):
> https://gitlab.torproject.org/tpo/core/arti/-/blob/4549ce574f0d7a3dba2bcfdee6515544a6a692e9/maint/cargo_audit#L30-34