PT-2021-1738 · Cisco+1 · Snort+1

Published 2021-01-13 · Updated 2024-12-13 · CVE-2021-1236

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Multiple Cisco products (affected versions not specified)

Description The issue is related to a flaw in the detection algorithm of the Snort application detection engine, which could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. An attacker could exploit this by sending crafted packets that would flow through an affected system, potentially delivering a malicious payload to the protected network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-670

Related Identifiers

ALT-PU-2021-1678

ALT-PU-2024-16610

BDU:2021-00435

CVE-2021-1236

DLA-3317-1

DSA-5354-1

MGASA-2023-0117

Affected Products

Alt Linux

Snort

References · 19

• https://advisories.mageia.org/MGASA-2023-0117.html · Security Note
• https://osv.dev/vulnerability/DSA-5354-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00435 · Security Note
• https://debian.org/lts/security/2023/dla-3317 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1236 · Vendor Advisory
• https://debian.org/security/2023/dsa-5354 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2023-0117 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-1236 · Security Note
• https://osv.dev/vulnerability/DLA-3317-1 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-1236 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-1236 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1236 · Security Note
• https://bugs.mageia.org/show_bug.cgi?id=27741 · Note
• https://t.me/cvenotify/44657 · Telegram Post