CVE-2023-39346Network attack vector

Remote code execution via incomplete ZIP filtering

Published Aug 4, 2023 · Updated Oct 17, 2024

Unrestricted file upload in LinuxASMCallGraph before commit 20dba06 allows remote attackers to execute code via a crafted ZIP file. web/index.php checks only the archive listing for filenames containing php before extracting the ZIP, leaving symlinks and .htaccess content unscreened. Exploitation requires the web upload path and a web-server configuration that processes the extracted content, granting code execution on the server.

CVSS severity8.8
High
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in LinuxASMCallGraph before commit 20dba06 allows remote attackers to execute code via a crafted ZIP file. web/index.php checks only the archive listing for filenames containing php before extracting the ZIP, leaving symlinks and .htaccess content unscreened. Exploitation requires the web upload path and a web-server configuration that processes the extracted content, granting code execution on the server.

The record

CVE
CVE-2023-39346
Published
Aug 4, 2023
Updated
Oct 17, 2024
Vendor
bjrjk
Product
LinuxASMCallGraph
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 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=< 20dba06bd1a3cf260612d4f21547c25002121cd5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

bjrjk · LinuxASMCallGraphversion=< 20dba06bd1a3cf260612d4f21547c25002121cd5

Published CVSS scores

8.8GitHubCVSS:3.1/AV:N/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

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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