PT-2021-7765 · Xmill · Xmill

Carl Hurd · Published 2021-05-10 · Updated 2024-08-03 · CVE-2021-21829

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Xmill version 0.7

Description The issue is related to a heap-based buffer overflow error in the Decompression EnumerationUncompressor::UncompressItem function when handling XML files. This can be exploited by a remote attacker to execute arbitrary code. A specially crafted XMI file can trigger this issue, potentially leading to remote code execution.

Recommendations For Xmill version 0.7, consider disabling the UncompressItem function in the Decompression EnumerationUncompressor as a temporary workaround until a patch is available. Restrict access to handling XML files to minimize the risk of exploitation. Avoid using the Decompression EnumerationUncompressor functionality with untrusted or malicious XMI files until the issue is resolved.

Exploit

Fix

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

BDU:2023-02705

CVE-2021-21829

Affected Products

Xmill

References · 13

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1292 · Exploit
• https://osv.dev/vulnerability/CVE-2021-21829 · Vendor Advisory
• https://safe-surf.ru/upload/VULN/VULN-20210813.2.pdf · Security Note
• https://bdu.fstec.ru/vul/2023-02705 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-21829 · Security Note
• https://t.me/cvenotify/19352 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021081203 · Note
• https://t.me/cibsecurity/40759 · Telegram Post
• https://cisa.gov/news-events/ics-advisories/icsa-22-223-03 · Note
• https://t.me/cibsecurity/27337 · Telegram Post
• https://se.com/hk/en/download/document/SEVD-2021-222-02 · Note
• https://t.me/cvenotify/88695 · Telegram Post
• https://t.me/cvenotify/28899 · Telegram Post