DSA-4613-1 libidn2 - security update
Published
Unknown
Product
debian/libidn2 vulnerabilities
3 published CVES affecting debian/libidn2, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 3
- Critical
- 1
- High
- 1
- Medium
- 0
- Low
- 0
- Unscored
- 1
- CISA KEV
- 0
Latest debian/libidn2 CVEs
Newest publication first
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HighCVSS 7.5 EPSS 3.2%
GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels. This makes it possible in some circumstances for one domain to impersonate another. By creating a malicious domain that matches a target domain ex...
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CriticalCVSS 9.8 EPSS 3.7%
idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.