RHSA-2021:3042 - Security Advisory

Topic

New rust-toolset-1.52 packages are now available as a part of Red Hat Developer Tools for Red Hat Enterprise Linux.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Rust Toolset provides the Rust programming language compiler rustc, the cargo build tool and dependency manager, the cargo-vendor plugin, and required libraries.

The following packages have been upgraded to a later upstream version: rust-toolset-1.52-rust (1.52.1). (BZ#1947197)

Security Fix(es):

• rust: optimization for joining strings can cause uninitialized bytes to be exposed (CVE-2020-36323)
• rust: heap-based buffer overflow in read_to_end() because it does not validate the return value from Read in an unsafe context (CVE-2021-28875)
• rust: panic safety issue in Zip implementation (CVE-2021-28876)
• rust: memory safety violation in Zip implementation for nested iter::Zips (CVE-2021-28877)
• rust: memory safety violation in Zip implementation when next_back() and next() are used together (CVE-2021-28878)
• rust: integer overflow in the Zip implementation can lead to a buffer overflow (CVE-2021-28879)
• rust: double free in Vec::from_iter function if freeing the element panics (CVE-2021-31162)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

For information on usage, see Using Rust Toolset linked in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Developer Tools (for RHEL Workstation) 1 x86_64
• Red Hat Developer Tools (for RHEL Server) 1 x86_64
• Red Hat Developer Tools (for RHEL Server for System Z) 1 s390x
• Red Hat Developer Tools (for RHEL Server for IBM Power LE) 1 ppc64le
• Red Hat Developer Tools (for RHEL Server for IBM Power) 1 ppc64

Fixes

• BZ - 1949194 - CVE-2021-28875 rust: heap-based buffer overflow in read_to_end() because it does not validate the return value from Read in an unsafe context
• BZ - 1949198 - CVE-2021-28876 rust: panic safety issue in Zip implementation
• BZ - 1949204 - CVE-2021-28877 rust: memory safety violation in Zip implementation for nested iter::Zips
• BZ - 1949207 - CVE-2021-28878 rust: memory safety violation in Zip implementation when next_back() and next() are used together
• BZ - 1949211 - CVE-2021-28879 rust: integer overflow in the Zip implementation can lead to a buffer overflow
• BZ - 1950396 - CVE-2020-36323 rust: optimization for joining strings can cause uninitialized bytes to be exposed
• BZ - 1950398 - CVE-2021-31162 rust: double free in Vec::from_iter function if freeing the element panics

CVEs

• CVE-2020-36323
• CVE-2021-28875
• CVE-2021-28876
• CVE-2021-28877
• CVE-2021-28878
• CVE-2021-28879
• CVE-2021-31162

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_developer_tools/1/html/using_rust_1.52.1_toolset