PT-2018-15394 · Radare2+1 · Radare2+1

Hongxuchen · Published 2018-12-25 · Updated 2020-10-15 · CVE-2018-20459

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions radare2 versions prior to 3.1.4

Description The issue allows attackers to cause a denial-of-service by crafting an arm assembly input, leading to an application crash due to an out-of-bounds read. This is caused by a loop using an incorrect index and missing length validation.

Recommendations For versions prior to 3.1.4, update to version 3.1.4 or later to resolve the issue. As a temporary workaround, consider restricting the use of the armass assemble function in libr/asm/arch/arm/armass.c until a patch is available. Avoid using crafted arm assembly inputs that could trigger the out-of-bounds read.

Exploit

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2019-1175

CVE-2018-20459

Affected Products

Alt Linux

Radare2

References · 14

• 🔥 https://github.com/radare/radare2/issues/12418 · Exploit
• https://github.com/radareorg/radare2/commit/e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20459 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20459 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20459 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20459 · Security Note
• https://ubuntu.com/security/CVE-2018-20459 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20459 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20457 · Security Note
• https://errata.altlinux.org/ALT-PU-2019-1175 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-20459 · Vendor Advisory
• https://github.com/radare/radare2/commit/e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7 · Note
• https://packages.altlinux.org/ru/vuln/CVE-2018-20459 · Note
• https://github.com/devnexen/radare2/commit/88a8adf080a9f8ed5a4250a2507752e133ba54dd · Note