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CVE-2021-35938

rpm: races with chown/chmod/capabilities calls during installation

A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Rpm
Products
Fedora Enterprise Linux Openshift and 3 more
CVE-2021-35937

rpm: TOCTOU race in checks for unsafe symlinks

A race condition vulnerability was found in rpm. A local unprivileged user could use this flaw to bypass the checks that were introduced in response to CVE-2017-7500 and CVE-2017-7501, potentially gaining root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Rpm
Products
Fedora Enterprise Linux Openshift and 3 more
CVE-2021-20271

rpm: Signature checks bypass via corrupted rpm package

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.

CVSS 3.1 · 7.0 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Rpm and 1 more
Products
Fedora Enterprise Linux Rhel Aus and 6 more
CVE-2021-20266

rpm: missing length checks in hdrblobInit()

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.

CVSS 3.1 · 4.9 Medium EPSS 1.5% KEV · Not listed
Vendors
Fedoraproject Redhat Rpm
Products
Fedora Enterprise Linux Rpm
CVE-2017-7500

rpm: Following symlinks to directories when installing packages allows privilege escalation

It was found that rpm did not properly handle RPM installations when a destination path was a symbolic link to a directory, possibly changing ownership and permissions of an arbitrary directory, and RPM files being placed in an arbitrary destination. An attacker, with write access to a directory in which a subdirectory will be installed, could redirect that directory to an arbitrary location and gain root privilege.

CVSS 3.0 · 7.3 High EPSS < 1% KEV · Not listed
Vendors
Rpm
Products
Rpm