PT-2020-17550 · Branca · Branca

Published 2020-11-29 · Updated 2022-09-02 · CVE-2020-35918

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions branca versions prior to 0.10.0

Description An issue was discovered where decoding tokens with invalid base62 data can cause the program to panic. This occurs when tokens with incorrect base62 encoding are supplied, which can lead to unexpected panics in decoding functions. The documentation incorrectly stated that an error should be reported instead of a panic.

Recommendations For versions prior to 0.10.0, update to version 0.10.0 or later to resolve the issue. As a temporary workaround, consider validating base62 encoded tokens before passing them to decoding functions to minimize the risk of unexpected panics.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2020-35918

GHSA-C9RV-3JMQ-527W

RUSTSEC-2020-0075

Affected Products

Branca

References · 10

• 🔥 https://github.com/return/branca/issues/24 · Exploit
• 🔥 https://rustsec.org/advisories/RUSTSEC-2020-0075.html · Exploit
• https://osv.dev/vulnerability/GHSA-c9rv-3jmq-527w · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35918 · Security Note
• https://osv.dev/vulnerability/CVE-2020-35918 · Vendor Advisory
• https://osv.dev/vulnerability/RUSTSEC-2020-0075 · Vendor Advisory
• https://github.com/tuupola/branca-spec/issues/22 · Note
• https://github.com/return/branca/commit/7da3274bd99b05dce9c3f9b4b129d0145c71820b · Note
• https://github.com/return/branca · Note
• https://crates.io/crates/branca · Note