PatchSiren cyber security CVE debrief
CVE-2023-52356 Redhat CVE debrief
CVE-2023-52356 is a high-severity availability issue in libtiff. According to the supplied NVD record, a crafted TIFF file can trigger a segmentation fault and heap-buffer overflow in TIFFReadRGBATileExt(), allowing a remote attacker to cause denial of service. The record does not indicate impact to confidentiality or integrity, but it does map to a network-reachable, no-authentication attack surface with high availability impact.
- Vendor
- Redhat
- Product
- CVE-2023-52356
- CVSS
- HIGH 7.5
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2024-01-25
- Original CVE updated
- 2026-05-12
- Advisory published
- 2024-01-25
- Advisory updated
- 2026-05-12
Who should care
Organizations that parse or convert TIFF images using libtiff should pay attention, especially teams running exposed upload, thumbnailing, OCR, or document-processing workflows. Administrators of Red Hat Enterprise Linux 8/9 systems and other downstream packages that ship libtiff should also review vendor advisories and update paths.
Technical summary
The supplied corpus describes a flaw in libtiff’s TIFFReadRGBATileExt() API where malformed TIFF input can lead to a segmentation fault and heap-buffer overflow. NVD lists the primary weakness as CWE-787, while Red Hat also tags CWE-122. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, which supports a remote, low-complexity denial-of-service assessment with no user interaction required.
Defensive priority
High priority for any environment that accepts untrusted TIFF files or relies on shared libtiff processing, because the issue is remotely triggerable and can take down services that handle image input.
Recommended defensive actions
- Apply vendor fixes for libtiff and any downstream packages that include it, following your distribution’s security advisories.
- Inventory applications, services, and appliances that link against libtiff or accept TIFF uploads/ingestion.
- Prioritize patching on internet-facing or otherwise untrusted image-processing paths first.
- Where business rules allow, add temporary controls to restrict or reject untrusted TIFF input at trust boundaries until updates are deployed.
- Monitor crash logs and segmentation-fault telemetry in image-processing workflows, then validate service behavior after patching.
Evidence notes
This debrief is based only on the supplied official vulnerability corpus: the NVD record, CVE record reference, and linked vendor/advisory references. The corpus states the issue affects libtiff and includes Red Hat Enterprise Linux 8.0 and 9.0 as vulnerable CPEs. NVD maps the weakness to CWE-787 and the Red Hat source adds CWE-122. The supplied enrichment marks the issue as not known to be in CISA KEV, and no ransomware use is provided. Published date context is 2024-01-25; 2026-05-12 is the record modification date, not the issue date.
Official resources
Publicly disclosed in the CVE/NVD record on 2024-01-25. The supplied corpus shows the NVD record was later modified on 2026-05-12, and it does not include a KEV listing or evidence of known ransomware use.