CVE-2020-36317

2021-04-1100:00:00

ubuntu.com

rust

string::retain()

utf-8

memory safety

bug

trusty.

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.002

Percentile

52.4%

JSON

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.

Bugs

<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986803>

Notes

Author	Note
litios	on trusty, the vulnerable code is in src/liballoc/string.rs.

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchrustc< 1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2UNKNOWN
ubuntu14.04noarchrustc< anyUNKNOWN
ubuntu16.04noarchrustc< anyUNKNOWN