CVE-1999-0693

HP-UX - Buffer Overflow in ToolTalk TT_SESSION Environment Variable

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0693. PoCs published by Job de Haas of ITSX.

AI-analyzed exploit summary This exploit targets a buffer overflow in the libtt.so library via the TT_SESSION environment variable in CDE's dtsession, leading to local root privilege escalation on vulnerable systems. It constructs a malicious environment to trigger the overflow and execute shellcode.

Description

Buffer overflow in TT_SESSION environment variable in ToolTalk shared library allows local users to gain root privileges.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Job de Haas of ITSX · clocallinux
https://www.exploit-db.com/exploits/19501

This exploit targets a buffer overflow in the libtt.so library via the TT_SESSION environment variable in CDE's dtsession, leading to local root privilege escalation on vulnerable systems. It constructs a malicious environment to trigger the overflow and execute shellcode.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Racy
Target: Common Desktop Environment (CDE) <= 2.1.20 (dtsession)
No auth needed
Prerequisites: Local access to a vulnerable system · DISPLAY environment variable set
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/641
Various Sources vendor-advisory x_refsource_hp
http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX9909-103
Vendor Advisory vendor-advisory x_refsource_sun
http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/192
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4374

Scores

EPSS 0.0104
EPSS Percentile 59.6%

Details

Status published
Products (4)
hp/hp-ux 10
hp/hp-ux 11
ibm/aix 4
sco/unixware 7
Published Mar 02, 2000
Tracked Since Feb 18, 2026