Update bundle signature bypass in Guardian/CMC before 26.4.0
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Fix
- Fixed in 26.4.0
- 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
Guardian and CMC software (versions prior to the fixed release) are affected by a flaw in how the update installer validates update bundles. The impact is that an attacker with administrative access could install a crafted update that passes signature checks but runs an unsigned script with root privileges, potentially exposing or altering sensitive data, changing appliance settings, or shutting the appliance down.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A signature verification vulnerability was discovered in the update installation functionality due to inconsistent validation of the update bundle contents. An attacker with administrative privileges can remotely supply a crafted update bundle that passes signature verification but runs an unsigned script when the bundle is installed. The script runs with root privileges, allowing the attacker to read or modify sensitive data, change the appliance configuration, or shut down the appliance.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Nozomi Networks Guardian
fixed in 26.4.0
- Nozomi Networks CMC
fixed in 26.4.0