CVE-2018-15856

An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted keymap files.

References

Affected packages

Git / github.com/xkbcommon/libxkbcommon

Affected ranges

Type: GIT
Repo: https://github.com/xkbcommon/libxkbcommon
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

842e4351c2c97de6051cab6ce36b4a81e709a0e1

Affected versions

xkbcommon-0.*

xkbcommon-0.2.0

xkbcommon-0.3.0

xkbcommon-0.3.1

xkbcommon-0.3.2

xkbcommon-0.4.0

xkbcommon-0.4.1

xkbcommon-0.4.2

xkbcommon-0.4.3

xkbcommon-0.5.0

xkbcommon-0.6.0

xkbcommon-0.6.1

xkbcommon-0.7.0

xkbcommon-0.7.1

xkbcommon-0.7.2

xkbcommon-0.8.0

Database specific

vanir_signatures

[
    {
        "signature_type": "Function",
        "digest": {
            "function_hash": "111084396536791922603128660627799779023",
            "length": 2866.0
        },
        "source": "https://github.com/xkbcommon/libxkbcommon/commit/842e4351c2c97de6051cab6ce36b4a81e709a0e1",
        "target": {
            "file": "src/compose/parser.c",
            "function": "lex"
        },
        "id": "CVE-2018-15856-4feb5e44",
        "deprecated": false,
        "signature_version": "v1"
    },
    {
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "339976281554706251715786465784200783707",
                "286489673923724958058425891237163149150",
                "213471127827195187591013137219067204299",
                "314939995327740885430641703664042403296"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/xkbcommon/libxkbcommon/commit/842e4351c2c97de6051cab6ce36b4a81e709a0e1",
        "target": {
            "file": "src/compose/parser.c"
        },
        "id": "CVE-2018-15856-72580473",
        "deprecated": false,
        "signature_version": "v1"
    }
]