Category Archives: Advisories

Advisories

USN-6941-1: Python vulnerability

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It was discovered that the Python ipaddress module contained incorrect
information about which IP address ranges were considered “private” or
“globally reachable”. This could possibly result in applications applying
incorrect security policies.

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Advisories

bind-9.18.28-2.fc39 bind-dyndb-ldap-11.10-26.fc39

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FEDORA-2024-ef8a7031e7

Packages in this update:

bind-9.18.28-2.fc39
bind-dyndb-ldap-11.10-26.fc39

Update description:

Update to BIND 9.18.28

Security Fixes

A malicious DNS client that sent many queries over TCP but never read the responses could cause a server to respond slowly or not at all for other clients. This has been fixed. (CVE-2024-0760) [GL #4481]

It is possible to craft excessively large resource records sets, which have the effect of slowing down database processing. This has been addressed by adding a configurable limit to the number of records that can be stored per name and type in a cache or zone database. The default is 100, which can be tuned with the new max-records-per-type option. [GL #497] [GL #3405]

It is possible to craft excessively large numbers of resource record types for a given owner name, which has the effect of slowing down database processing. This has been addressed by adding a configurable limit to the number of records that can be stored per name and type in a cache or zone database. The default is 100, which can be tuned with the new max-types-per-name option. (CVE-2024-1737) [GL #3403]

ISC would like to thank Toshifumi Sakaguchi who independently discovered and responsibly reported the issue to ISC. [GL #4548]

Validating DNS messages signed using the SIG(0) protocol (RFC 2931) could cause excessive CPU load, leading to a denial-of-service condition. Support for SIG(0) message validation was removed from this version of named. (CVE-2024-1975) [GL #4480]

Due to a logic error, lookups that triggered serving stale data and required lookups in local authoritative zone data could have resulted in an assertion failure. This has been fixed. (CVE-2024-4076) [GL #4507]

Potential data races were found in our DoH implementation, related to HTTP/2 session object management and endpoints set object management after reconfiguration. These issues have been fixed. [GL #4473]

ISC would like to thank Dzintars and Ivo from nic.lv for bringing this to our attention.

When looking up the NS records of parent zones as part of looking up DS records, it was possible for named to trigger an assertion failure if serve-stale was enabled. This has been fixed. [GL #4661]

https://downloads.isc.org/isc/bind9/9.18.28/doc/arm/html/notes.html

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Advisories

USN-6940-1: snapd vulnerabilities

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Neil McPhail discovered that snapd did not properly restrict writes to the
$HOME/bin path in the AppArmor profile for snaps using the home plug. An
attacker who could convince a user to install a malicious snap could use this
vulnerability to escape the snap sandbox. (CVE-2024-1724)

Zeyad Gouda discovered that snapd failed to properly check the file type when
extracting a snap. An attacker who could convince a user to install a malicious
snap containing non-regular files could then cause snapd to block indefinitely
while trying to read from such files and cause a denial of
service. (CVE-2024-29068)

Zeyad Gouda discovered that snapd failed to properly check the destination of
symbolic links when extracting a snap. An attacker who could convince a user to
install a malicious snap containing crafted symbolic links could then cause
snapd to write out the contents of the symbolic link destination into a
world-readable directory. This in-turn could allow a local unprivileged user to
gain access to privileged information. (CVE-2024-29069)

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