PT-2021-2628 · Microsoft+3 · Edge+4

Zhou Aiting · Published 2021-01-14 · Updated 2024-06-15 · CVE-2021-21217

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Google Chrome versions prior to 90.0.4430.72

Description: The issue is related to the use of uninitialized data in PDFium, a component used by Google Chrome and Microsoft Edge for handling PDF content. This could allow a remote attacker to obtain potentially sensitive information from process memory by using a crafted PDF file. The attacker could also cause a denial of service via a specially crafted web page.

Recommendations: For Google Chrome versions prior to 90.0.4430.72, update to version 90.0.4430.72 or later to resolve the issue. As a temporary workaround, consider avoiding the use of PDFium for handling PDF content until a patch is available. Restrict access to PDF files from untrusted sources to minimize the risk of exploitation.

Exploit

Fix

Information Disclosure

Unchecked Return Value

Use of Uninitialized Resource

Weakness Enumeration

CWE-200

CWE-252

CWE-908

Related Identifiers

ALT-PU-2021-1667

ALT-PU-2021-1972

ALT-PU-2021-2007

ALT-PU-2021-2009

ALT-PU-2021-2141

BDU:2021-02118

CVE-2021-21217

DSA-4906-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Edge

Pdfium

References · 2341

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/chrome_cve_2021_21220_v8_insufficient_validation.rb · Exploit
• 🔥 https://github.com/xmzyshypnc/CVE-2021-30551 · Exploit
• 🔥 https://github.com/security-dbg/CVE-2021-21220 · Exploit
• 🔥❌ https://github.com/ohnonoyesyes/CVE-2021-21224 · Exploit, Deleted
• https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-21217 · Security Note
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2021-1126SE17 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4906-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21217 · Security Note
• https://ubuntu.com/security/CVE-2021-21217 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY · Vendor Advisory
• https://security.gentoo.org/glsa/202104-08 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21217 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A · Vendor Advisory