Shim: rce in http boot support may lead to secure boot bypass
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- shim
Version range not reported
- shim-signed
Version range not reported
- shim
Version range not reported
- shim
Version range not reported
- shim
Version range not reported
- shim
Version range not reported
- shim
Version range not reported
- shim
Version range not reported
- shim
Version range not reported
- shim
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- shim
Version range not reported
- shim-unsigned-x64
Version range not reported
- shim
Version range not reported
- shim
Version range not reported
- shim-unsigned-aarch64
Version range not reported
- shim-unsigned-x64
Version range not reported
- shim
Version range not reported