CVE-2022-25308Public exploit

Application crash via empty input under-read

Published Sep 6, 2022 · Updated Aug 3, 2024

Stack buffer under-read in GNU FriBidi before 1.0.12 allows local users to crash its command-line utility by processing crafted input. In bin/fribidi-main.c, main subtracts one from a zero strlen result and reads S_[-1] while trying to remove a trailing newline. Execution requires a user to run the fribidi utility on attacker-supplied input; the demonstrated consequence is process termination under AddressSanitizer.

CVSS severity7.8
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer under-read in GNU FriBidi before 1.0.12 allows local users to crash its command-line utility by processing crafted input. In bin/fribidi-main.c, main subtracts one from a zero strlen result and reads S_[-1] while trying to remove a trailing newline. Execution requires a user to run the fribidi utility on attacker-supplied input; the demonstrated consequence is process termination under AddressSanitizer.

The record

CVE
CVE-2022-25308
Published
Sep 6, 2022
Updated
Aug 3, 2024
Vendor
GNU
Product
GNU FriBidi
Classifications
CWE-787, CWE-121, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Fixed in v1.0.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

GNU · GNU FriBidiversion=Fixed in v1.0.12

Published CVSS scores

7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1204.002Malicious File

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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