CVE-2020-36323
Rust Standard Library String Join Uninitialized Data Exposure
Description
In the standard library in Rust before 1.52.0, there is an optimization for joining strings that can cause uninitialized bytes to be exposed (or the program to crash) if the borrowed string changes after its length is checked.
INFO
Published Date :
April 14, 2021, 7:15 a.m.
Last Modified :
Nov. 7, 2023, 3:22 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.2
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-36323 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-36323.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Rudra's artifact evaluation submission
Rust Dockerfile
CVEs for the Rust standard library
Rust
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-36323 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-36323 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/ -
Modified Analysis by [email protected]
Apr. 27, 2021
Action Type Old Value New Value Changed Reference Type https://github.com/rust-lang/rust/pull/81728#issuecomment-824904190 No Types Assigned https://github.com/rust-lang/rust/pull/81728#issuecomment-824904190 Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/ Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:rust-lang:rust:*:*:*:*:*:*:*:* versions up to (excluding) 1.50.3 OR *cpe:2.3:a:rust-lang:rust:*:*:*:*:*:*:*:* versions up to (excluding) 1.52.0 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 27, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 26, 2021
Action Type Old Value New Value Changed Description In the standard library in Rust before 1.50.3, there is an optimization for joining strings that can cause uninitialized bytes to be exposed (or the program to crash) if the borrowed string changes after its length is checked. In the standard library in Rust before 1.52.0, there is an optimization for joining strings that can cause uninitialized bytes to be exposed (or the program to crash) if the borrowed string changes after its length is checked. Added Reference https://github.com/rust-lang/rust/pull/81728#issuecomment-824904190 [No Types Assigned] -
CVE Modified by [email protected]
Apr. 24, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/ [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 20, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Changed Reference Type https://github.com/rust-lang/rust/issues/80335 No Types Assigned https://github.com/rust-lang/rust/issues/80335 Patch, Third Party Advisory Changed Reference Type https://github.com/rust-lang/rust/pull/81728 No Types Assigned https://github.com/rust-lang/rust/pull/81728 Patch, Third Party Advisory Changed Reference Type https://github.com/rust-lang/rust/pull/81728#issuecomment-821549174 No Types Assigned https://github.com/rust-lang/rust/pull/81728#issuecomment-821549174 Patch, Third Party Advisory Added CWE NIST CWE-134 Added CPE Configuration OR *cpe:2.3:a:rust-lang:rust:*:*:*:*:*:*:*:* versions up to (excluding) 1.50.3 -
CVE Modified by [email protected]
Apr. 19, 2021
Action Type Old Value New Value Added Reference https://github.com/rust-lang/rust/pull/81728#issuecomment-821549174 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-36323 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-36323
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.54 }} 0.09%
score
0.74661
percentile