PT-2021-3410 · Adobe · Incopy

Published 2021-05-11 · Updated 2021-07-06 · CVE-2021-21090

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Adobe InCopy versions 16.0 and earlier

Description The issue is related to a path traversal vulnerability when parsing a crafted file, allowing an unauthenticated attacker to achieve remote code execution in the context of the current user. Exploitation requires user interaction, where a victim must open a malicious file. The vulnerability is also associated with insufficient checking of the directory path name with limited access, which can be exploited by a remote attacker using a specially formed HTTP request.

Recommendations For Adobe InCopy versions 16.0 and earlier, as a temporary workaround, consider restricting access to crafted files until a patch is available. Avoid opening malicious files to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

BDU:2021-03261

CVE-2021-21090

ZDI-21-585

Affected Products

Incopy

References · 7

• https://helpx.adobe.com/security/products/incopy/apsb21-25.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03261 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21090 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21090 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-585 · Security Note
• https://cybersecurity-help.cz/vdb/SB2021051203 · Note
• https://t.me/cibsecurity/25741 · Telegram Post