RHSA-2003:071
Vulnerability from csaf_redhat - Published: 2003-07-08 19:44 - Updated: 2025-11-21 17:25Summary
Red Hat Security Advisory: hanterm-xf security update
Notes
Topic
Updated Hangul Terminal packages fix two security issues.
Details
Hangul Terminal is a terminal emulator for the X Window System, based on Xterm.
Hangul Terminal provides an escape sequence for reporting the current
window title, which essentially takes the current title and places it
directly on the command line. An attacker can craft an escape sequence
that sets the window title of a victim using Hangul Terminal to an
arbitrary command and then report it to the command line. Since it is not
possible to embed a carriage return into the window title the attacker
would then have to convince the victim to press Enter for it to process the
title as a command, although the attacker could craft other escape
sequences that might convince the victim to do so.
It is possible to lock up Hangul Terminal before version 2.0.5 by sending
an invalid DEC UDK escape sequence.
Users are advised to upgrade to these erratum packages, which contain
Hangul Terminal version 2.0.5 which is not vulnerable to these issues.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"text": "Hangul Terminal is a terminal emulator for the X Window System, based on Xterm.\n\nHangul Terminal provides an escape sequence for reporting the current\nwindow title, which essentially takes the current title and places it\ndirectly on the command line. An attacker can craft an escape sequence\nthat sets the window title of a victim using Hangul Terminal to an\narbitrary command and then report it to the command line. Since it is not\npossible to embed a carriage return into the window title the attacker\nwould then have to convince the victim to press Enter for it to process the\ntitle as a command, although the attacker could craft other escape\nsequences that might convince the victim to do so.\n\nIt is possible to lock up Hangul Terminal before version 2.0.5 by sending\nan invalid DEC UDK escape sequence. \n\nUsers are advised to upgrade to these erratum packages, which contain\nHangul Terminal version 2.0.5 which is not vulnerable to these issues.",
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"text": "The hanterm (hanterm-xf) terminal emulator 2.0.5 and earlier, and possibly later versions, allows attackers to modify the window title via a certain character escape sequence and then insert it back to the command line in the user\u0027s terminal, e.g. when the user views a file containing the malicious sequence, which could allow the attacker to execute arbitrary commands.",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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