CVE-2022-34299Public exploitNetwork attack vector

Application crash via unchecked DW_FORM_ref_sig8 read

Published Jun 22, 2022 · Updated Aug 3, 2024

Heap-based buffer over-read in libdwarf 0.4.0 allows context-dependent attackers to crash applications via a crafted DWARF file. The dwarf_global_formref_b function copies an eight-byte DW_FORM_ref_sig8 value without first verifying that it remains within its section. Triggering the flaw requires an application linked to the library to process the crafted file, and the resulting out-of-bounds read terminates the process.

CVSS severity8.1
High
EPSS probability1.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer over-read in libdwarf 0.4.0 allows context-dependent attackers to crash applications via a crafted DWARF file. The dwarf_global_formref_b function copies an eight-byte DW_FORM_ref_sig8 value without first verifying that it remains within its section. Triggering the flaw requires an application linked to the library to process the crafted file, and the resulting out-of-bounds read terminates the process.

The record

CVE
CVE-2022-34299
Published
Jun 22, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:P
8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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