TI-2023-14403 Aliases CVE-2023-30575 GHSA-jcgp-rv79-q77m

Apache Guacamole: Incorrect calculation of Guacamole protocol element lengths

LOW 35CWE-131Published 2023-06-07 · Updated 2024-10-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01007 63rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apache	Apache Guacamole	up to 1.5.1	—	No fix listed	CNA

Apache Guacamole VendorApache Affected up to 1.5.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:apache:guacamole::::::::	before 1.5.2	Vulnerable	Apache

cpe:2.3:a:apache:guacamole:*:*:*:*:*:*:*:* Versions before 1.5.2 Vulnerable ·Apache

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-30575
2026-10-03 Alias added: GHSA-jcgp-rv79-q77m

References

Advisory 1

https://lists.apache.org/thread/tn63n2lon0h5p45oft834t1dqvvxownv

TI-2019-14123 SQLite 3.30.1 mishandles certain SELECT statements with a nonexistent VIEW, leading to an application crash. CVSS 3.1HIGH 7.5
TI-2023-23512 Apache Guacamole: Integer overflow in handling of VNC image buffers CVSS 3.1HIGH 8.8
TI-2021-19751 Improper validation of SAML responses CVSS 3.1HIGH 8.8
TI-2023-14404 Apache Guacamole: Use-after-free in handling of RDP audio input buffer CVSS 3.1HIGH 8.1
TI-2017-02374 Race condition in Apache Guacamole CVSS 3.0HIGH 8.1
TI-2018-01241 Prior to 1.0.0, Apache Guacamole used a cookie for client-side storage of the user's… CVSS 3.0HIGH 7.5

See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences