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SUSE-SU-2018:3685-1

Vulnerability from csaf_suse - Published: 2018-11-08 16:57 - Updated: 2018-11-08 16:57
Summary
Security update for libxkbcommon
Severity
Low
Notes
Title of the patch: Security update for libxkbcommon
Description of the patch: This update for libxkbcommon to version 0.8.2 fixes the following issues: - Fix a few NULL-dereferences, out-of-bounds access and undefined behavior in the XKB text format parser. - CVE-2018-15853: Endless recursion could have been used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation (bsc#1105832). - CVE-2018-15854: Unchecked NULL pointer usage could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because geometry tokens were desupported incorrectly (bsc#1105832). - CVE-2018-15855: Unchecked NULL pointer usage could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an xkb_geometry section was mishandled (bsc#1105832). - CVE-2018-15856: An infinite loop when reaching EOL unexpectedly could be used by local attackers to cause a denial of service during parsing of crafted keymap files (bsc#1105832). - CVE-2018-15857: An invalid free in ExprAppendMultiKeysymList could have been used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by supplying a crafted keymap file (bsc#1105832). - CVE-2018-15858: Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file (bsc#1105832). - CVE-2018-15859: Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because lookup failures are mishandled (bsc#1105832). - CVE-2018-15861: Unchecked NULL pointer usage in ExprResolveLhs could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file that triggers an xkb_intern_atom failure (bsc#1105832). - CVE-2018-15862: Unchecked NULL pointer usage in LookupModMask could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with invalid virtual modifiers (bsc#1105832). - CVE-2018-15863: Unchecked NULL pointer usage in ResolveStateAndPredicate could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression (bsc#1105832). - CVE-2018-15864: Unchecked NULL pointer usage in resolve_keysym could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because a map access attempt can occur for a map that was never created (bsc#1105832).
Patchnames: SUSE-SLE-Module-Basesystem-15-2018-2620
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-devel-0.8.2-3.3.1.aarch64
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-devel-0.8.2-3.3.1.ppc64le
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-devel-0.8.2-3.3.1.s390x
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-devel-0.8.2-3.3.1.x86_64
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-0-0.8.2-3.3.1.aarch64
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-0-0.8.2-3.3.1.ppc64le
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-0-0.8.2-3.3.1.s390x
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-0-0.8.2-3.3.1.x86_64
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-devel-0.8.2-3.3.1.aarch64
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-devel-0.8.2-3.3.1.ppc64le
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-devel-0.8.2-3.3.1.s390x
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-devel-0.8.2-3.3.1.x86_64
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.aarch64
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.ppc64le
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.s390x
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.x86_64
Vendor Fix
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
Affected products
Recommended 16 products, the same list as for CVE-2018-15853
Threats
Impact low
References
URL Category
https://www.suse.com/support/security/rating/ external
https://ftp.suse.com/pub/projects/security/csaf/s… self
https://www.suse.com/support/update/announcement/… self
https://lists.suse.com/pipermail/sle-security-upd… self
https://bugzilla.suse.com/1105832 self
https://www.suse.com/security/cve/CVE-2018-15853/ self
https://www.suse.com/security/cve/CVE-2018-15854/ self
https://www.suse.com/security/cve/CVE-2018-15855/ self
https://www.suse.com/security/cve/CVE-2018-15856/ self
https://www.suse.com/security/cve/CVE-2018-15857/ self
https://www.suse.com/security/cve/CVE-2018-15858/ self
https://www.suse.com/security/cve/CVE-2018-15859/ self
https://www.suse.com/security/cve/CVE-2018-15861/ self
https://www.suse.com/security/cve/CVE-2018-15862/ self
https://www.suse.com/security/cve/CVE-2018-15863/ self
https://www.suse.com/security/cve/CVE-2018-15864/ self
https://www.suse.com/security/cve/CVE-2018-15853 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15854 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15855 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15856 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15857 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15858 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15859 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15861 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15862 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15863 external
https://bugzilla.suse.com/1105832 external
https://www.suse.com/security/cve/CVE-2018-15864 external
https://bugzilla.suse.com/1105832 external

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        ]
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      "references": [
        {
          "category": "external",
          "summary": "CVE-2018-15855",
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        },
        {
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        {
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          "text": "https://www.suse.com/security/cve/CVE-2018-15856"
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        {
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        {
          "category": "external",
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            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2018-11-08T16:57:36Z",
          "details": "low"
        }
      ],
      "title": "CVE-2018-15862"
    },
    {
      "cve": "CVE-2018-15863",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2018-15863"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon-x11-devel-0.8.2-3.3.1.x86_64",
          "SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.aarch64",
          "SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.ppc64le",
          "SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.s390x",
          "SUSE Linux Enterprise Module for Basesystem 15:libxkbcommon0-0.8.2-3.3.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2018-15863",
          "url": "https://www.suse.com/security/cve/CVE-2018-15863"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1105832 for CVE-2018-15863",
          "url": "https://bugzilla.suse.com/1105832"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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          ]
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      ],
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        {
          "category": "impact",
          "date": "2018-11-08T16:57:36Z",
          "details": "low"
        }
      ],
      "title": "CVE-2018-15863"
    },
    {
      "cve": "CVE-2018-15864",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2018-15864"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Unchecked NULL pointer usage in resolve_keysym in xkbcomp/parser.y in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because a map access attempt can occur for a map that was never created.",
          "title": "CVE description"
        }
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      "threats": [
        {
          "category": "impact",
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          "details": "low"
        }
      ],
      "title": "CVE-2018-15864"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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