Information Exposure Through Discrepancy Affecting botan package, versions [,3.6.0)
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.05% (17th
percentile)
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Test your applications- Snyk ID SNYK-UNMANAGED-BOTAN-8302914
- published 24 Oct 2024
- disclosed 23 Oct 2024
- credit Moritz Schneider, Daniele Lain, Ivan Puddu, Nicolas Dutly, Srdjan Capkun
Introduced: 23 Oct 2024
New CVE-2024-50382 Open this link in a new tabHow to fix?
Upgrade botan to version 3.6.0 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure Through Discrepancy due to compiler-induced secret-dependent control flow in ghash.cpp in GHASH in AES-GCM. An attacker can manipulate the execution flow and potentially leak sensitive information by exploiting the branch instead of an XOR with carry operation.
Note:
This is only exploitable if specific LLVM versions, such as Clang in LLVM 15 on RISC-V, are used.