Information Exposure Through Discrepancy Affecting botan package, versions [,3.6.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-BOTAN-8302914
- published24 Oct 2024
- disclosed23 Oct 2024
- creditMoritz Schneider, Daniele Lain, Ivan Puddu, Nicolas Dutly, Srdjan Capkun
Introduced: 23 Oct 2024
CVE-2024-50382 (opens in a new tab)How 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.