rhsa-2003:070
Vulnerability from csaf_redhat
Published
2003-06-06 07:45
Modified
2025-11-21 17:25
Summary
Red Hat Security Advisory: : : : Updated hanterm packages provide security fixes

Notes

Topic
Updated hanterm 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. In addition, 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.
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": "Moderate"
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    "category": "csaf_security_advisory",
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    "distribution": {
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    "notes": [
      {
        "category": "summary",
        "text": "Updated hanterm packages fix two security issues.",
        "title": "Topic"
      },
      {
        "category": "general",
        "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\nIn addition, it is possible to lock up Hangul Terminal before version 2.0.5\nby sending an invalid DEC UDK escape sequence.  \n\nUsers are advised to upgrade to these erratum packages, which contain\nHangul Terminal version 2.0.5.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
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        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2003/rhsa-2003_070.json"
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    "title": "Red Hat Security Advisory: : : : Updated hanterm packages provide security fixes",
    "tracking": {
      "current_release_date": "2025-11-21T17:25:40+00:00",
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      "id": "RHSA-2003:070",
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      "revision_history": [
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          "date": "2003-06-06T07:45:00+00:00",
          "number": "1",
          "summary": "Initial version"
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        {
          "date": "2003-06-06T00:00:00+00:00",
          "number": "2",
          "summary": "Last updated version"
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          "date": "2025-11-21T17:25:40+00:00",
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  "product_tree": {
    "branches": [
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      "ids": [
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          "text": "1616955"
        }
      ],
      "notes": [
        {
          "category": "description",
          "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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        },
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      ],
      "release_date": "2003-02-24T00:00:00+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2003-06-06T07:45:00+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nTo update all RPMs for your particular architecture, run:\n\nrpm -Fvh [filenames]\n\nwhere [filenames] is a list of the RPMs you wish to upgrade.  Only those\nRPMs which are currently installed will be updated.  Those RPMs which are\nnot installed but included in the list will not be updated.  Note that you\ncan also use wildcards (*.rpm) if your current directory *only* contains the\ndesired RPMs.\n\nPlease note that this update is also available via Red Hat Network.  Many\npeople find this an easier way to apply updates.  To use Red Hat Network,\nlaunch the Red Hat Update Agent with the following command:\n\nup2date\n\nThis will start an interactive process that will result in the appropriate\nRPMs being upgraded on your system.",
          "product_ids": [
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        }
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      "threats": [
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          "details": "Low"
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          "text": "1616957"
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      ],
      "notes": [
        {
          "category": "description",
          "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.",
          "title": "Vulnerability description"
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        {
          "category": "external",
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        }
      ],
      "release_date": "2003-02-24T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2003-06-06T07:45:00+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nTo update all RPMs for your particular architecture, run:\n\nrpm -Fvh [filenames]\n\nwhere [filenames] is a list of the RPMs you wish to upgrade.  Only those\nRPMs which are currently installed will be updated.  Those RPMs which are\nnot installed but included in the list will not be updated.  Note that you\ncan also use wildcards (*.rpm) if your current directory *only* contains the\ndesired RPMs.\n\nPlease note that this update is also available via Red Hat Network.  Many\npeople find this an easier way to apply updates.  To use Red Hat Network,\nlaunch the Red Hat Update Agent with the following command:\n\nup2date\n\nThis will start an interactive process that will result in the appropriate\nRPMs being upgraded on your system.",
          "product_ids": [
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        }
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      "threats": [
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          "category": "impact",
          "details": "Moderate"
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    }
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}


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