CVE-2019-20367Network attack vector

Memory disclosure or crash via unbounded comparison

Published Jan 8, 2020 · Updated Aug 5, 2024

Out-of-bounds read in libbsd before 0.10.0 allows remote attackers to read process memory or crash a consuming process. The __fdnlist function uses unbounded strcmp calls on symbol names from strtab, so a name lacking a NUL terminator is read past the table boundary. A consuming application must process a crafted symbol table; the issue does not write memory or affect integrity.

CVSS severity9.1
Critical
EPSS probability2.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in libbsd before 0.10.0 allows remote attackers to read process memory or crash a consuming process. The __fdnlist function uses unbounded strcmp calls on symbol names from strtab, so a name lacking a NUL terminator is read past the table boundary. A consuming application must process a crafted symbol table; the issue does not write memory or affect integrity.

The record

CVE
CVE-2019-20367
Published
Jan 8, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, CAPEC-540
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CAPEC-540Overread Buffers

Public exploit references

No public exploit references are available in this record.

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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