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CVE-2026-4437gethostbyaddr and gethostbyaddr_r may incorrectly handle DNS response

The GNU C Library glibc; Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP; Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP; Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Yayım: (7 ay önce)

Açıklama

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

Zayıflık türü (CWE): CWE-125

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

ÜreticiÜrünSürümler
gnu glibc 2.34 – ≤ 2.43
The GNU C Library glibc 2.34 – ≤ 2.43
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5 – < V3.1.6
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5 – < V3.1.6
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5 – < V3.1.6

Kaynaklar ve yamalar

CPE eşleşmeleri (NVD) (1)
  • cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* ≥ 2.34 ≤ 2.43

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