CVE-2022-28042
📋 TL;DR
CVE-2022-28042 is a heap-based use-after-free vulnerability in stb_image.h v2.27's JPEG decoder that allows attackers to execute arbitrary code or cause denial of service. This affects any application using the vulnerable stb_image.h library for JPEG image processing. The vulnerability is triggered when processing specially crafted JPEG images.
💻 Affected Systems
- stb_image.h library
- Applications embedding stb_image.h
📦 What is this software?
Fedora by Fedoraproject
Fedora by Fedoraproject
Fedora by Fedoraproject
Stb Image.h by Nothings
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Application crash (denial of service) with potential for limited code execution depending on memory layout.
If Mitigated
Application crash without code execution if memory protections (ASLR, DEP) are effective.
🎯 Exploit Status
Exploitation requires crafting malicious JPEG images. Public proof-of-concept demonstrates crash/DoS; weaponization for RCE would require additional work.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: stb_image.h version 2.28 or later
Vendor Advisory: https://github.com/nothings/stb/security/advisories
Restart Required: No
Instructions:
1. Update stb_image.h to version 2.28 or later. 2. Recompile all applications using the library. 3. Replace existing stb_image.h files with patched version.
🔧 Temporary Workarounds
Disable JPEG support
allDisable JPEG image processing in applications using stb_image.h
# Recompile with STBI_NO_JPEG defined
Input validation
allImplement strict validation of JPEG images before processing
# Use external validation tools before passing images to stb_image.h
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable applications
- Deploy application allowlisting to prevent execution of unauthorized code
🔍 How to Verify
Check if Vulnerable:
Check if stb_image.h version 2.27 is present in source code or compiled binaries. Use grep for 'stb_image.h' version strings.Check Version:
grep -r "stb_image.h" --include="*.h" --include="*.c" --include="*.cpp" | grep -i versionVerify Fix Applied:
Verify stb_image.h version is 2.28 or later. Test with known malicious JPEG samples to ensure no crashes.📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing JPEG images
- Memory access violation errors
- Segmentation faults in image processing functions
Network Indicators:
- Unusual JPEG file uploads to web applications
- Multiple failed image processing attempts
SIEM Query:
source="application.log" AND ("segmentation fault" OR "access violation" OR "heap corruption") AND "jpeg"🔗 References
- https://github.com/nothings/stb/issues/1289
- https://github.com/nothings/stb/pull/1297
- https://lists.debian.org/debian-lts-announce/2023/01/msg00045.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FXLM5XL77SNH4IPTSXOQD7XL4E2EMIN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I4HXIWU5HBOADXZVMREHT4YTO5WVYXEQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMBCMJGAZRQS55SNECUWZSC5URVLEZ5R/
- https://github.com/nothings/stb/issues/1289
- https://github.com/nothings/stb/pull/1297
- https://lists.debian.org/debian-lts-announce/2023/01/msg00045.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FXLM5XL77SNH4IPTSXOQD7XL4E2EMIN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I4HXIWU5HBOADXZVMREHT4YTO5WVYXEQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMBCMJGAZRQS55SNECUWZSC5URVLEZ5R/
