PT-2021-3083 · Cisco · Cisco Isa+5

Santosh Krishnamurthy · Published 2021-04-28 · Updated 2024-11-18 · CVE-2021-1494

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Firepower Threat Defense (FTD) versions (affected versions not specified) Cisco Catalyst versions (affected versions not specified) Cisco ISR versions (affected versions not specified) Cisco ISA versions (affected versions not specified) Cisco ISRv versions (affected versions not specified)

Description The vulnerability is related to the Snort detection engine and is due to incorrect handling of specific HTTP header parameters. This could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP and deliver a malicious payload. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device.

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

Protection Mechanism Failure

Weakness Enumeration

CWE-693

Related Identifiers

BDU:2021-02695

CVE-2021-1494

DLA-3317-1

DSA-5354-1

MGASA-2023-0117

Affected Products

Cisco Catalyst

Cisco Ftd

Cisco Isa

Cisco Isr

Cisco Isrv

Snort

References · 26

• https://advisories.mageia.org/MGASA-2023-0117.html · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-1494 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3317-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1494 · Security Note
• https://osv.dev/vulnerability/MGASA-2023-0117 · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-1494 · Security Note
• https://debian.org/lts/security/2023/dla-3317 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5354-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02695 · Security Note
• https://ubuntu.com/security/CVE-2021-1494 · Vendor Advisory
• https://bugs.mageia.org/show_bug.cgi?id=27741 · Note
• https://xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai/bin/view/%D0%9E%D0%A1%D0%BD%D0%BE%D0%B2%D0%B0/%D0%9E%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F/2.8 · Note
• https://twitter.com/transilienceai/status/1857654378603188395 · Twitter Post
• https://twitter.com/transilienceai/status/1857654365164556724 · Twitter Post