The Rust Programming Language Standard Library 1.34.x before 1.34.2 contains...

Vulnerability Description

The Rust Programming Language Standard Library 1.34.x before 1.34.2 contains a stabilized method which, if overridden, can violate Rust's safety guarantees and cause memory unsafety. If the `Error::type_id` method is overridden then any type can be safely cast to any other type, causing memory safety vulnerabilities in safe code (e.g., out-of-bounds write or read). Code that does not manually implement Error::type_id is unaffected.

References

• https://groups.google.com/forum/#%21topic/rustlang-security-announcements/aZabeCMUv70
• https://blog.rust-lang.org/2019/05/13/Security-advisory.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K6T4BNA5KQYJRIKIGGBOGBMR7TRXPHLR/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HG47HYH3AQTUMBUMX3S3G5DNAY4CBW6N/
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00076.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00031.html