dbcve.org
LibpagApplication · Tencent

CVE-2024-34408

MEDIUM · 5.3 CVSS v3.1 Published 2024-05-03
Fix available
A fix is available. Upgrade to after 4.3.51 or later.
See remediation →
55/100
Remediation priority · Elevated
Public exploit Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Tencent libpag through 4.3.51 has an integer overflow in DecodeStream::checkEndOfFile() in codec/utils/DecodeStream.cpp via a crafted PAG (Portable Animated Graphics) file.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-122

Data overflows a buffer allocated on the heap, corrupting neighbouring heap structures and allocator metadata that a patient attacker can groom into control of execution. It is subtler than a stack overflow but just as dangerous. The fix is validating lengths before every write and using safe allocators and bounded operations.

General guidance for the heap-based buffer overflow class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
LibpagApplication
Affected:<= 4.3.51

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 4.3.51
Vendor patch github.com →
Recommended fix Moderate confidence
  1. Review the vendor patch at https://github.com/Tencent/libpag/pull/2243 to understand the code changes made to fix the integer overflow in DecodeStream::checkEndOfFile()
  2. Apply the patch from PR #2243 to your local copy of libpag source code in codec/utils/DecodeStream.cpp
  3. Rebuild the libpag library after applying the patch
  4. Redeploy or redistribute the patched libpag library to any systems or applications that use it
  5. Verify the fix by testing with the crafted PAG file that triggered the vulnerability (or a proof-of-concept) to confirm the integer overflow is resolved

Generated from the published advisory — verify against the referenced sources before acting.

We can identify the exact fixed release, upgrade, and verify it in staging — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-34408 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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