Description Preview
CVE-2023-46361 identifies a segmentation fault (SEGV) vulnerability in Artifex Software’s jbig2dec v0.20. The issue occurs in the error handling path jbig2_error within the file /jbig2dec/jbig2.c. Crafted JBIG2 input can trigger this path, leading to a crash of the decoder and potential denial of service. The advisory entry associates CWE-400 Uncontrolled Resource Consumption with this vulnerability. The data provided does not specify a fixed version; affected version listed is v0.20. Refer to the linked vulnerability write-up for reproduction details and context.
Overview
Artifex jbig2dec is reported vulnerable to a segmentation fault in its error handling code path, specifically jbig2_error in jbig2.c. When processing certain crafted JBIG2 data, the decoder can crash, resulting in an denial of service scenario. The vulnerability is categorized under CWE-400 Uncontrolled Resource Consumption, underscoring the potential for resource-related DoS if exploited. The CVE data indicates the affected version as v0.20, with no explicit patched version provided in the material.
Remediation
- Upgrade to a patched version: Apply the vendor-provided fix as soon as an updated release for jbig2dec is available from Artifex Software (or a widely accepted downstream maintainer). Verify the version after update and confirm the vulnerability is addressed via vendor advisories.
- If a patch is not yet available: isolate and limit exposure
- Run the decoder in a sandbox/container with restricted resources (memory and CPU quotas) to reduce impact from potential exploitation.
- Disable or gate JBIG2 decoding where possible, or only process images from trusted sources.
- Implement strict input validation and content filtering before decoding to detect and reject malformed or suspicious JBIG2 data.
- Implement general hardening and monitoring
- Enable and run security-focused builds (ASAN/UBSan, canaries) during testing to catch boundary or heap-related issues.
- Apply robust resource quotas and timeouts for decoding tasks to mitigate DoS potential.
- Keep vulnerability monitoring in place (subscribe to vendor advisories and CVE feeds) and run periodic vulnerability scans for JBIG2 libraries.
- Consider alternatives
- If timely patching is not feasible, consider temporarily using an alternative JBIG2 decoding library or decoupling JBIG2 processing from critical systems until a fix is available.
References
Industry ExposureMost to leastThis section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
- ManufacturingManufacturing: Medium
- Health Care & Social AssistanceHealth Care & Social Assistance: Low
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services: Low
- Public AdministrationPublic Administration: Low
- Finance and InsuranceFinance and Insurance: Low
- Educational ServicesEducational Services: Low
- Other Services (except Public Administration)Other Services (except Public Administration): Low
- Transportation & WarehousingTransportation & Warehousing: Low
- Arts, Entertainment & RecreationArts, Entertainment & Recreation: Low
- Retail TradeRetail Trade: Low
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting: Low
- Management of Companies & EnterprisesManagement of Companies & Enterprises: Low
- Real Estate Rental & LeasingReal Estate Rental & Leasing: Low
- Accommodation & Food ServicesAccommodation & Food Services: Low
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services: Low
- ConstructionConstruction: Low
- InformationInformation: Low
- MiningMining: Low
- UtilitiesUtilities: Low
- Wholesale TradeWholesale Trade: Low
