CVE-2023-0593

Arbitrary file write via absolute extraction paths

Published Jan 31, 2023 · Updated Mar 27, 2025

Path traversal in devttys0 yaffshiv 0.1 and earlier allows attackers to write outside the extraction directory via a crafted YAFFS image. YAFFSExtractor relies on a literal '..' check before os.path.join, so an absolute image path replaces the intended output base instead of remaining beneath it. The user must extract an attacker-supplied image, and resulting writes have the extractor process's filesystem permissions.

CVSS severity5.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in devttys0 yaffshiv 0.1 and earlier allows attackers to write outside the extraction directory via a crafted YAFFS image. YAFFSExtractor relies on a literal '..' check before os.path.join, so an absolute image path replaces the intended output base instead of remaining beneath it. The user must extract an attacker-supplied image, and resulting writes have the extractor process's filesystem permissions.

The record

CVE
CVE-2023-0593
Published
Jan 31, 2023
Updated
Mar 27, 2025
Vendor
devttys0
Product
yaffshiv
Classifications
CWE-22, CAPEC-126, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2025Record 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=0 <=0.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

devttys0 · yaffshivversion=0 <=0.1

Published CVSS scores

5.5ONEKEYCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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