Acrobat out-of-bounds and Foxit use-after-free PDF reader vulnerabilities found

Thursday, December 19, 2024 13:53

Cisco Talos’ Vulnerability Research team recently disclosed three out-of-bounds read vulnerabilities in Adobe Acrobat Reader, and two use-after-free vulnerabilities in Foxit Reader.

These vulnerabilities exist in Adobe Acrobat Reader and Foxit Reader, two of the most popular and feature-rich PDF readers on the market.

The vulnerabilities mentioned in this blog post have been patched by their respective vendors, all in adherence to Cisco’s third-party vulnerability disclosure policy. Adobe’s patched this in version 24.005.20320, and Foxit’s patch appears in PDF Editor version 12.1.9/11.2.12.

For Snort coverage that can detect the exploitation of these vulnerabilities, download the latest rule sets from Snort.org, and our latest Vulnerability Advisories are always posted on Talos Intelligence’s website.

**Out-of-bounds read Adobe Acrobat Reader Vulnerabilities **

Discovered by KPC.

Specially crafted font files embedded into a PDF can trigger out-of-bounds memory reads in TALOS-2024-2076 (CVE-2024-49534), TALOS-2024-2070 (CVE-2024-49533), and TALOS-2024-2064 (CVE-2024-49532), which could lead to the disclosure of sensitive information and further exploitation. An attacker must trick the user into opening a malicious file to trigger these vulnerabilities.

**Foxit object use-after-free vulnerabilities **

Discovered by KPC.

Two use-after-free vulnerabilities exist in the way Foxit Reader handles certain objects. TALOS-2024-2093 (CVE-2024-49576) and TALOS-2024-2094 (CVE-2024-47810) can be triggered by malicious JavaScript code in a PDF file. An attack needs to either trick a user into opening the malicious file, or the user must navigate to a maliciously crafted website while the Foxit browser extension is enabled. This vulnerability can lead to memory corruption and result in arbitrary code execution.