Bug 1949198 (CVE-2021-28876) - CVE-2021-28876 rust: panic safety issue in Zip implementation
Summary: CVE-2021-28876 rust: panic safety issue in Zip implementation
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-28876
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1949199 1949200 1952541 1952542 1952979 1959108
Blocks: 1949215
TreeView+ depends on / blocked
 
Reported: 2021-04-13 17:24 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-04-17 21:17 UTC (History)
10 users (show)

Fixed In Version: rust 1.52.0
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Clone Of:
Environment:
Last Closed: 2021-08-10 13:28:20 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:3042 0 None None None 2021-08-10 07:26:07 UTC
Red Hat Product Errata RHSA-2021:3063 0 None None None 2021-08-10 13:51:28 UTC

Description Guilherme de Almeida Suckevicz 2021-04-13 17:24:32 UTC 
In the standard library in Rust before 1.52.0, the Zip implementation has a panic safety issue. It calls __iterator_get_unchecked() more than once for the same index when the underlying iterator panics (in certain conditions). This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Reference:
https://github.com/rust-lang/rust/issues/81740

Upstream patch:
https://github.com/rust-lang/rust/pull/81741
Comment 1 Guilherme de Almeida Suckevicz 2021-04-13 17:24:58 UTC 
Created rust tracking bugs for this issue:

Affects: epel-7 [bug 1949200]
Affects: fedora-all [bug 1949199]
Comment 5 errata-xmlrpc 2021-08-10 07:26:04 UTC 
This issue has been addressed in the following products:

  Red Hat Developer Tools

Via RHSA-2021:3042 https://access.redhat.com/errata/RHSA-2021:3042
Comment 6 Product Security DevOps Team 2021-08-10 13:28:20 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-28876
Comment 7 errata-xmlrpc 2021-08-10 13:51:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:3063 https://access.redhat.com/errata/RHSA-2021:3063
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