Bugzilla – Bug 1218887
VUL-0: CVE-2023-45237: edk2, ovmf: Use of a Weak PseudoRandom Number Generator
Last modified: 2024-05-17 11:24:11 UTC
EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45237 https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h https://www.cve.org/CVERecord?id=CVE-2023-45237 http://www.openwall.com/lists/oss-security/2024/01/16/2 https://bugzilla.redhat.com/show_bug.cgi?id=2258706
EDk2 doesn't have patch yet: https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h 9. CVE-2023-45237 CVSS 5.3 : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) ... Mitigation release plan Patch files for vulnerabilities 1-7 are available now via https://bugzilla.tianocore.org/show_bug.cgi?id=4518. These patches will be integrated for the Feb 2024 EDK2 release. For vulnerabilities 8 and 9, patches do not exist at this time. We are not aware of any exploits for vulnerabilities 8 and 9, either in the wild or in the lab. Exposure is limited to PXE boot or HTTP boot on an untrusted network, which is not a recommended usage for the UEFI network stack. This GHSA will be updated when fixes become available.