Full Report
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
Analysis Summary
# Vulnerability: Multiple Memory Corruption Vulnerabilities in Adobe Acrobat Reader and Foxit Reader
## CVE Details
- CVE ID: CVE-2024-49534, CVE-2024-49533, CVE-2024-49532 (Adobe); CVE-2024-49576, CVE-2024-497810 (Foxit)
- CVSS Score: Not explicitly provided, but the context implies High severity due to potential information disclosure and arbitrary code execution.
- CWE: Not explicitly provided, assumed to be related to Heap Buffer Overflow/Use-After-Free.
## Affected Systems
- Products: Adobe Acrobat Reader; Foxit Reader (including PDF Editor)
- Versions: Prior to Adobe 24.005.20320; Prior to Foxit PDF Editor 12.1.9/11.2.12
- Configurations: Requires opening a crafted PDF file. Foxit vulnerabilities can also be triggered via malicious website navigation if the Foxit browser extension is enabled.
## Vulnerability Description
Three **Out-of-Bounds Read** vulnerabilities were discovered in Adobe Acrobat Reader, triggered by specially crafted font files embedded within a PDF document. These flaws can lead to the disclosure of sensitive information.
Two **Use-After-Free (UAF)** vulnerabilities were discovered in Foxit Reader related to how it handles certain objects. Exploitation of these flaws can lead to memory corruption and potentially arbitrary code execution.
## Exploitation
- Status: Patched; indication suggests they were likely known/discovered through research, but exploitation status in the wild is not specified beyond PoC potential related to the technical findings.
- Complexity: Low to Medium (Requires social engineering to open a malicious file, or specific browser extension configuration for Foxit access).
- Attack Vector: Network (Delivery via malicious file/website).
## Impact
- Confidentiality: High (Adobe OOB Read leads to sensitive information disclosure).
- Integrity: High (Foxit UAF can lead to arbitrary code execution).
- Availability: Medium (Potential for high impact crash leading to denial of service, though not the primary focus).
## Remediation
### Patches
- **Adobe Acrobat Reader:** Patched in version **24.005.20320**.
- **Foxit Reader/PDF Editor:** Patched in versions **12.1.9** / **11.2.12**.
### Workarounds
- No specific workarounds were detailed in the context provided, other than applying the vendor patches immediately.
## Detection
- **Indicators of Compromise:** Malicious PDF files containing crafted font data or JavaScript designed to trigger memory corruption.
- **Detection methods and tools:** Download the latest Snort rule sets from Snort dot org for coverage designed to detect exploitation attempts against these specific flaws.
## References
- Vendor advisories: Patches released by Adobe and Foxit.
- Relevant links - defanged:
- Cisco’s third-party vulnerability disclosure policy: hxxps://sec.cloudapps.cisco.com/security/center/resources/vendor_vulnerability_policy.html
- Snort coverage download: hxxps://snort.org/
- Talos Intelligence Vulnerability Reports: hxxps://talosintelligence.com/vulnerability_reports