Security readout for executives and security teams
Plain-English summary
This flaw can crash software that uses Exiv2 0.26 while reading specially crafted TIFF metadata. For most organizations, the business risk is service disruption in image-processing workflows rather than confirmed data theft or system takeover.
Executive priority
Prioritize remediation where public image uploads or automated media processing can crash customer-facing or operational services. Lower urgency for isolated desktop use with trusted files only.
Technical view
CVE-2017-18005 is a null pointer dereference in Exiv2::DataValue::toLong in value.cpp, associated with crafted TIFF metadata. The supplied sources identify Exiv2 0.26 and a Debian LTS security update, but provide no CVSS score or complete affected CPE list.
Likely exposure
Exposure is most likely in applications, servers, or desktop tools that use Exiv2 0.26 or affected distribution packages to parse TIFF metadata from user-supplied images.
Exploitation context
The sources describe a crafted TIFF metadata trigger. KEV is false, and no supplied source states active exploitation. The evidence supports an availability concern; it does not establish remote code execution.
Researcher notes
The public bundle is sparse: no CVSS vector, CWE, CPEs, or exploit-status evidence are provided. Analysis should stay limited to null dereference behavior in Exiv2 0.26 and distribution-specific fixes.
Mitigation direction
- Upgrade Exiv2 to a vendor-supported fixed package or release.
- Apply Debian LTS DLA 3265-1 packages where applicable.
- Limit automated processing of untrusted TIFF files until patched.
- Check upstream Exiv2 and distribution advisories for exact fixed versions.
Validation and detection
- Inventory systems and applications that embed or package Exiv2.
- Confirm whether any deployed Exiv2 version is 0.26 or vendor-marked vulnerable.
- Review image upload, thumbnailing, indexing, and metadata extraction paths.
- Verify vendor security updates are installed on affected hosts.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2017-18005 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Exiv2/exiv2/issues/168CVE reference
- [debian-lts-announce] 20230110 [SECURITY] [DLA 3265-1] exiv2 security updateCVE reference · mailing-list
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.