[월:] 2022년 09월

CVE-2022-3204

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CVE-2022-3204

A vulnerability named ‘Non-Responsive Delegation Attack’ (NRDelegation Attack) has been discovered in various DNS resolving software. The NRDelegation Attack works by having a malicious delegation with a considerable number of non responsive nameservers. The attack starts by querying a resolver for a record that relies on those unresponsive nameservers. The attack can cause a resolver to spend a lot of time/resources resolving records under a malicious delegation point where a considerable number of unresponsive NS records reside. It can trigger high CPU usage in some resolver implementations that continually look in the cache for resolved NS records in that delegation. This can lead to degraded performance and eventually denial of service in orchestrated attacks. Unbound does not suffer from high CPU usage, but resources are still needed for resolving the malicious delegation. Unbound will keep trying to resolve the record until hard limits are reached. Based on the nature of the attack and the replies, different limits could be reached. From version 1.16.3 on, Unbound introduces fixes for better performance when under load, by cutting opportunistic queries for nameserver discovery and DNSKEY prefetching and limiting the number of times a delegation point can issue a cache lookup for missing records.

Source: CVE-2022-3204

CVE-2022-39219

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CVE-2022-39219

Bifrost is a middleware package which can synchronize MySQL/MariaDB binlog data to other types of databases. Versions 1.8.6-release and prior are vulnerable to authentication bypass when using HTTP basic authentication. This may allow group members who only have read permissions to write requests when they are normally forbidden from doing so. Version 1.8.7-release contains a patch. There are currently no known workarounds.

Source: CVE-2022-39219

CVE-2022-39245

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CVE-2022-39245

Mist is the command-line interface for the makedeb Package Repository. Prior to version 0.9.5, a user-provided `sudo` binary via the `PATH` variable can allow a local user to run arbitrary commands on the user’s system with root permissions. Versions 0.9.5 and later contain a patch. No known workarounds exist.

Source: CVE-2022-39245

CVE-2022-39243

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CVE-2022-39243

NuProcess is an external process execution implementation for Java. In all the versions of NuProcess where it forks processes by using the JVM’s Java_java_lang_UNIXProcess_forkAndExec method (1.2.0+), attackers can use NUL characters in their strings to perform command line injection. Java’s ProcessBuilder isn’t vulnerable because of a check in ProcessBuilder.start. NuProcess is missing that check. This vulnerability can only be exploited to inject command line arguments on Linux. Version 2.0.5 contains a patch. As a workaround, users of the library can sanitize command strings to remove NUL characters prior to passing them to NuProcess for execution.

Source: CVE-2022-39243