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The CVE involves a heap-based out-of-bounds write vulnerability in the GPRS protocol implementation across multiple Samsung Exynos processors and modems. The flaw occurs due to a mismatch between the declared payload length and the actual payload length. When processing GPRS packets, the system trusts the declared length field within the payload without proper validation. This allows an attacker to craft malicious packets with an incorrect length value, leading to heap corruption. The out-of-bounds write can overwrite critical memory structures, potentially enabling remote code execution or denial of service. The vulnerability is particularly dangerous due to its potential exploitation over cellular networks without user interaction.
DailyCVE Form:
Platform: Samsung Exynos
Version: Multiple
Vulnerability: Heap OOB Write
Severity: Critical
Date: 2023-XX-XX
Prediction: Patch Q2 2024
What Undercode Say:
Check affected firmware versions adb shell getprop ro.boot.bootloader Debug GPRS stack logs logcat | grep -i "gprs" Memory analysis gdb -ex "x/x [bash]"
How Exploit:
- Craft malformed GPRS packets
- Trigger heap overflow via length mismatch
- Overwrite critical memory structures
Protection from this CVE:
- Apply Samsung security updates
- Disable unnecessary GPRS features
- Use memory-safe languages
Impact:
- Remote code execution
- Denial of service
- Device compromise
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
