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Zafiyetler / CVE-2021-33640

kritik

CVE-2021-33640

libtar: fixes for CVE-2021-33645 and CVE-2021-33646 introduced new use-after-free bugs in libtar

Yayın Değişiklik CWE 416
En geç 24 Eki 2026, 07:11 UTC tarihinden beri Trivy database'indeO derlemeden önce ne zaman girdiği kayıtlı değil.

Kaynağa göre önem derecesi

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Trivy'nin kendi etiketi CRITICAL. Kritik diyenler: NVD, Azure Linux, CBL-Mariner. Daha düşük diyenler: Red Hat (orta).

Açıklama

After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free).

Etkilenen paketler ve düzeltilmiş sürümler

KaynakPaketDüzeltildiği sürüm
Azure Linux 3.0libtar0:1.2.20-11.azl3
CBL-Mariner 1.0libtar0:1.2.20-11.cm1
CBL-Mariner 2.0libtar0:1.2.20-11.cm2
Red Hatlibtar, libtar-develdüzeltme belirtilmemiş
seal Red Hat 7libtar, seal-libtar1.2.11-29.el7+sp999
5 kaynaktaki 7 kaydın hepsini göster
KaynakPaketDüzeltildiği sürüm
Azure Linux 3.0libtar0:1.2.20-11.azl3
CBL-Mariner 1.0libtar0:1.2.20-11.cm1
CBL-Mariner 2.0libtar0:1.2.20-11.cm2
Red Hatlibtardüzeltme belirtilmemiş
Red Hatlibtar-develdüzeltme belirtilmemiş
seal Red Hat 7libtar1.2.11-29.el7+sp999
seal Red Hat 7seal-libtar1.2.11-29.el7+sp999

Referanslar

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.