PT-2021-22644 · Swftools · Swftools

Published 2021-09-20 · Updated 2021-09-22 · CVE-2021-39562

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: swftools versions through 20200710

Description: An issue exists in the function FileStream::makeSubStream() located in Stream.cc, which allows an attacker to cause Denial of Service due to a NULL pointer dereference.

Recommendations: For versions through 20200710, consider restricting access to the FileStream::makeSubStream() function until a patch is available. As a temporary workaround, consider disabling the makeSubStream() function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-39562

Affected Products

Swftools

References · 7

• 🔥 https://github.com/matthiaskramm/swftools/issues/98 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-39562 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-39562 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-39562 · Security Note
• https://ubuntu.com/security/CVE-2021-39562 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39562 · Vendor Advisory
• https://t.me/cvenotify/21316 · Telegram Post