PT-2022-5322 · Nginx · Nginx Njs

Q1Iq · Published 2022-10-28 · Updated 2022-10-31 · CVE-2022-43286

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Nginx NJS version 0.7.2

Description The issue is related to a heap-use-after-free bug caused by an illegal memory copy in the njs json parse iterator call function at njs json.c. This bug can be exploited by a remote attacker to execute arbitrary code.

Recommendations For Nginx NJS version 0.7.2, as a temporary workaround, consider disabling the njs json parse iterator call function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2022-06627

CVE-2022-43286

Affected Products

Nginx Njs

References · 6

• 🔥 https://github.com/nginx/njs/issues/480 · Exploit
• https://github.com/nginx/njs/commit/2ad0ea24a58d570634e09c2e58c3b314505eaa6a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-43286 · Security Note
• https://osv.dev/vulnerability/CVE-2022-43286 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-06627 · Security Note
• https://vuldb.com/?id.212488 · Note