Bug 1949204 (CVE-2021-28877) - CVE-2021-28877 rust: memory safety violation in Zip implementation for nested iter::Zips
Summary: CVE-2021-28877 rust: memory safety violation in Zip implementation for nested...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-28877
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: 1949205 1949206 1952547 1952548 1952980 1959107
Blocks: 1949215
TreeView+ depends on / blocked
 
Reported: 2021-04-13 17:31 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-04-17 21:17 UTC (History)
10 users (show)

Fixed In Version: rust 1.51.0
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Environment:
Last Closed: 2021-08-10 13:28:25 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 13:51:32 UTC

Description Guilherme de Almeida Suckevicz 2021-04-13 17:31:50 UTC 
In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Reference and upstream patch:
https://github.com/rust-lang/rust/pull/80670
Comment 1 Guilherme de Almeida Suckevicz 2021-04-13 17:32:13 UTC 
Created rust tracking bugs for this issue:

Affects: epel-7 [bug 1949206]
Affects: fedora-all [bug 1949205]
Comment 7 errata-xmlrpc 2021-08-10 07:26:05 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 8 Product Security DevOps Team 2021-08-10 13:28:25 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-2021-28877
Comment 9 errata-xmlrpc 2021-08-10 13:51:29 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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