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Noroxi
NVD / CVE Program· CNA redhat

CVE-2023-40745: Libtiff: integer overflow in tiffcp.c

Noroxi assessment

Priority: Monitor (action score 26/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.4% (FIRST EPSS); higher than 72.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: gitlab.com/libtiff/libtiff libtiff 4.6.0.

Low priority for now. Upgrade to gitlab.com/libtiff/libtiff libtiff 4.6.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

LibTIFF is vulnerable to an integer overflow. This flaw allows remote attackers to cause a denial of service (application crash) or possibly execute an arbitrary code via a crafted tiff image, which triggers a heap-based buffer overflow.

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Oct 5, 2023
Updated
Jun 17, 2026
EPSS
1.4% · 72th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.4%

CNA vs NVD score

NVD
6.5
CNA · redhat
6.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-40745

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
libtifflibtiff
netappactive iq unified manager
fedoraprojectfedora
redhatenterprise linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedoraall versions
  • libtiff libtiffbefore 4.6.0
  • netapp active iq unified managerall versions
  • redhat enterprise linux8.0
  • redhat enterprise linux9.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • gitlab.com/libtiff/libtiff libtiff

    • before 4.6.0affected · semver

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsaffected
    • all versionsaffected
    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • 0:4.4.0-12.el9 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9libtiffbefore 4.4.0-12.el94.4.0-12.el9
AlmaLinux:9libtiff-develbefore 4.4.0-12.el94.4.0-12.el9
AlmaLinux:9libtiff-toolsbefore 4.4.0-12.el94.4.0-12.el9
Debian:10tiffbefore 4.1.0+git191117-2~deb10u84.1.0+git191117-2~deb10u8
Debian:11tiffbefore 4.2.0-1+deb11u54.2.0-1+deb11u5
Debian:12tiffbefore 4.5.0-6+deb12u14.5.0-6+deb12u1
Debian:13tiffbefore 4.5.1+git230720-14.5.1+git230720-1
openSUSE:Leap Micro 5.3tiffbefore 4.0.9-150000.45.41.14.0.9-150000.45.41.1
Red Hat:enterprise_linux:9::appstreamlibtiffbefore 0:4.4.0-12.el90:4.4.0-12.el9
Red Hat:enterprise_linux:9::appstreamlibtiff-debuginfobefore 0:4.4.0-12.el90:4.4.0-12.el9
Red Hat:enterprise_linux:9::appstreamlibtiff-debugsourcebefore 0:4.4.0-12.el90:4.4.0-12.el9
Red Hat:enterprise_linux:9::appstreamlibtiff-develbefore 0:4.4.0-12.el90:4.4.0-12.el9
Red Hat:enterprise_linux:9::appstreamlibtiff-tools-debuginfobefore 0:4.4.0-12.el90:4.4.0-12.el9
Red Hat:enterprise_linux:9::crblibtiff-toolsbefore 0:4.4.0-12.el90:4.4.0-12.el9
SUSE:Linux Enterprise Micro 5.3tiffbefore 4.0.9-150000.45.41.14.0.9-150000.45.41.1
SUSE:Linux Enterprise Software Development Kit 12 SP5tiffbefore 4.0.9-44.80.14.0.9-44.80.1

Same product

libtiff: all records

Other highest-scoring records for the same primary product.

  • CVE-2006-3459Multiple stack-based buffer overflows in the TIFF library (libtiff) before 3.8.2, as used in Adobe Reader 9.3.0 and other products, allow co
    46Plan
  • CVE-2004-1308Integer overflow in (1) tif_dirread.c and (2) tif_fax3.c for libtiff 3.5.7 and 3.7.0 allows remote attackers to execute arbitrary code via a
    44Plan
  • CVE-2018-12900Heap-based buffer overflow in the cpSeparateBufToContigBuf function in tiffcp.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0beta7, 4.
    43Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-40090Aug 22, 2023 · An issue was discovered in function TIFFReadDirectory libtiff before 4.4.0 allows attackers to cause a denial of service via crafted TIFF fi
    26Monitor
  • ← EarlierCVE-2023-3576Oct 4, 2023 · Libtiff: memory leak in tiffcrop.c
    22Monitor
  • Later →CVE-2023-41175Oct 5, 2023 · Libtiff: potential integer overflow in raw2tiff.c
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
gitlab.com/libtiff/libtiff libtiff4.6.0Vendor (CNA)
almalinux:libtiff4.4.0-12.el9 · AlmaLinux:9Package registry (OSV)
almalinux:libtiff-devel4.4.0-12.el9 · AlmaLinux:9Package registry (OSV)
almalinux:libtiff-tools4.4.0-12.el9 · AlmaLinux:9Package registry (OSV)
debian:tiff4.5.0-6+deb12u1 · Debian:12Package registry (OSV)
opensuse:tiff4.0.9-150000.45.41.1 · openSUSE:Leap Micro 5.3Package registry (OSV)
red hat:libtiff0:4.4.0-12.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:libtiff-debuginfo0:4.4.0-12.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:libtiff-debugsource0:4.4.0-12.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:libtiff-devel0:4.4.0-12.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:libtiff-tools0:4.4.0-12.el9 · Red Hat:enterprise_linux:9::crbPackage registry (OSV)
red hat:libtiff-tools-debuginfo0:4.4.0-12.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
suse:tiff4.0.9-150000.45.41.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)
suse:tiff4.0.9-44.80.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-190 · Integer Overflow or Wraparound

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records