CVSS: 4.9EPSS: 0%CPEs: 3EXPL: 0CVE-2021-20266 – rpm: missing length checks in hdrblobInit()
https://notcve.org/view.php?id=CVE-2021-20266
A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability. Se detectó un fallo en RPM en la función hdrblobInit() en el archivo lib/header.c. Este fallo permite a un atacante que puede modificar el rpmdb causar una lectura fuera de límites. • https://bugzilla.redhat.com/show_bug.cgi?id=1927741 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC https://security.gentoo.org/glsa/202107-43 https://access.redhat.com/security/cve/CVE-2021-20266 • CWE-125: Out-of-bounds Read •
CVSS: 7.0EPSS: 0%CPEs: 14EXPL: 0CVE-2021-20271 – rpm: Signature checks bypass via corrupted rpm package
https://notcve.org/view.php?id=CVE-2021-20271
A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability. Se detectó un fallo en la funcionalidad de comprobación de firmas de RPM cuando se lee un archivo de paquete. Este fallo permite a un atacante que pueda convencer a una víctima de instalar un paquete aparentemente verificable, cuyo encabezado de firma fue modificado, causar una corrupción de la base de datos de RPM y ejecutar código. • https://bugzilla.redhat.com/show_bug.cgi?id=1934125 https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY https://security.gentoo.org/glsa/ • CWE-345: Insufficient Verification of Data Authenticity •