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CVE-2021-3445

libdnf: Signature verification bypass via signature placed in the main RPM header

A flaw was found in libdnf's signature verification functionality in versions before 0.60.1. This flaw allows an attacker to achieve code execution if they can alter the header information of an RPM package and then trick a user or system into installing it. The highest risk of this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
Vendors
Fedoraproject Redhat Rpm
Products
Fedora Enterprise Linux Libdnf
CVE-2021-3421

rpm: unsigned signature header leads to string injection into an rpm database

A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects RPM versions before 4.17.0-alpha.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Rpm
Products
Fedora Enterprise Linux Rhel Eus and 1 more
CVE-2021-35939

rpm: checks for unsafe symlinks are not performed for intermediary directories

It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. 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
Redhat Rpm
Products
Enterprise Linux Openshift Openshift Data Foundation and 2 more
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-2019-3817

libcomps: use after free when merging two objmrtrees

A use-after-free flaw has been discovered in libcomps before version 0.1.10 in the way ObjMRTrees are merged. An attacker, who is able to make an application read a crafted comps XML file, may be able to crash the application or execute malicious code.

CVSS 3.0 · 7.5 High EPSS 1.7% KEV · Not listed
Vendors
Redhat Rpm
Products
Enterprise Linux Rhel Extras Other Libcomps
CVE-2018-10897

yum-utils: reposync: improper path validation may lead to directory traversal

A directory traversal issue was found in reposync, a part of yum-utils, where reposync fails to sanitize paths in remote repository configuration files. If an attacker controls a repository, they may be able to copy files outside of the destination directory on the targeted system via path traversal. If reposync is running with heightened privileges on a targeted system, this flaw could potentially result in system compromise via the overwriting of critical system files. Version 1.1.31 and older are believed to be affected.

CVSS 3.1 · 8.1 High EPSS 5.6% KEV · Not listed
Vendors
Redhat Rpm
Products
Enterprise Linux Enterprise Linux Desktop Enterprise Linux Server and 3 more
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