rhsa-2003:071
Vulnerability from csaf_redhat
Published
2003-07-08 19:44
Modified
2025-11-21 17:25
Summary
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.",
"title": "Details"
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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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"date": "2003-07-08T19:44:00+00:00",
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"text": "The DEC UDK processing feature in the hanterm (hanterm-xf) terminal emulator before 2.0.5 allows attackers to cause a denial of service via a certain character escape sequence that causes the terminal to enter a tight loop.",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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