Bug 1949189 (CVE-2020-36317) - CVE-2020-36317 rust: memory safety violation in String::retain()
Summary: CVE-2020-36317 rust: memory safety violation in String::retain()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-36317
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1896712 1951680 1951701 1951702
Blocks: 1949215
TreeView+ depends on / blocked
 
Reported: 2021-04-13 17:03 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-04-17 21:17 UTC (History)
11 users (show)

Fixed In Version: rust 1.49.0
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Last Closed: 2021-05-18 20:38:43 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-04-13 17:03:35 UTC 
In the standard library in Rust before 1.49.0, String::retain() function has a panic safety problem. It allows creation of a non-UTF-8 Rust string when the provided closure panics. This bug could result in a memory safety violation when other string APIs assume that UTF-8 encoding is used on the same string.

Reference:
https://github.com/rust-lang/rust/issues/78498

Upstream patch:
https://github.com/rust-lang/rust/pull/78499
Comment 6 errata-xmlrpc 2021-05-18 16:14:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1935 https://access.redhat.com/errata/RHSA-2021:1935
Comment 7 Product Security DevOps Team 2021-05-18 20:38:43 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-2020-36317
Comment 8 errata-xmlrpc 2021-06-03 10:55:47 UTC 
This issue has been addressed in the following products:

  Red Hat Developer Tools

Via RHSA-2021:2243 https://access.redhat.com/errata/RHSA-2021:2243
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