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CVE-2019-17401· NVD / CVE Program· CNA mitre

libyal liblnk 20191006 has a heap-based buffer over-read in the network_share_name_offset>20 code block of liblnk_location_information_read_

libyal liblnk 20191006 has a heap-based buffer over-read in the network_share_name_offset>20 code block of liblnk_location_information_read_data in liblnk_location_information.c, a different issue than CVE-2019-17264. NOTE: the vendor has disputed this as described in the GitHub issue

LowCVSS 3.3 · v3.1—No exploit No fix recorded

Noroxi analysis

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Published
Oct 9, 2019
Updated
Jun 16, 2026
EPSS
0.4% · 31th percentile
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Report tools

JSON

Action score

13

Monitor

Low priority for now.

CVSS
13 / 40 · 3.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
liblnk projectliblnk

Affected versions

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

  • liblnk project liblnk20191006

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12liblnkall versions—

Same product

liblnk project: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-12098The liblnk_data_block_read function in liblnk_data_block.c in liblnk through 2018-04-19 allows remote attackers to cause an information disc
    22Monitor
  • CVE-2018-12097The liblnk_location_information_read_data function in liblnk_location_information.c in liblnk through 2018-04-19 allows remote attackers to
    22Monitor
  • CVE-2018-12096The liblnk_data_string_get_utf8_string_size function in liblnk_data_string.c in liblnk through 2018-04-19 allows remote attackers to cause a
    22Monitor
  • CVE-2019-17264In libyal liblnk before 20191006, liblnk_location_information_read_data in liblnk_location_information.c has a heap-based buffer over-read b
    13Monitor

Remediation

Which version to upgrade to

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

No fix version is recorded for this entry. Check the references for vendor advisories.

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

No credits in the CNA record.

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

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

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

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

All records