Cap'n Proto out-of-bounds

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Cap'n Proto. This affects an unknown function. The manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2022-46149. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cap'n Proto (affected version unknown). This issue affects an unknown functionality. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Cap'n Proto is a data interchange format and remote procedure call (RPC) system. Cap'n Proro prior to versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3, as well as versions of Cap'n Proto's Rust implementation prior to 0.13.7, 0.14.11, and 0.15.2 are vulnerable to out-of-bounds read due to logic error handling list-of-list. This issue may lead someone to remotely segfault a peer by sending it a malicious message, if the victim performs certain actions on a list-of-pointer type. Exfiltration of memory is possible if the victim performs additional certain actions on a list-of-pointer type. To be vulnerable, an application must perform a specific sequence of actions, described in the GitHub Security Advisory. The bug is present in inlined code, therefore the fix will require rebuilding dependent applications. Cap'n Proto has C++ fixes available in versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3. The `capnp` Rust crate has fixes available in versions 0.13.7, 0.14.11, and 0.15.2.

The weakness was disclosed 11/30/2022 by SegFault as GHSA-qqff-4vw4-f6hx. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-46149 since 11/28/2022. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211323 (Fedora 37 : rust-capnp / rust-sequoia-octopus-librnp (2022-7002ec8b22)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability. Applying the patch 25d34c67863fd960af34fc4f82a7ca3362ee74b9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (211323). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Cap'n Proto

License

• open-source

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Be aware that VulDB is the high quality source for vulnerability data.

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