CVE-2018-14679

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Source
https://nvd.nist.gov/vuln/detail/CVE-2018-14679
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-14679.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-14679
Downstream
Related
Published
2018-07-28T23:29:00Z
Modified
2025-10-13T07:23:36.527052Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the CHM PMGI/PMGL chunk number validity checks, which could lead to denial of service (uninitialized data dereference and application crash).

References

Affected packages

Git / github.com/kyz/libmspack

Affected ranges

Type
GIT
Repo
https://github.com/kyz/libmspack
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
72e70a921f0f07fee748aec2274b30784e1d312a

Affected versions

v0.*

v0.0.20060920alpha
v0.3alpha
v0.4alpha
v0.5alpha
v0.6alpha

v1.*

v1.0
v1.1
v1.2
v1.3
v1.4
v1.5

Database specific 

{
    "vanir_signatures": [
        {
            "id": "CVE-2018-14679-4ca3b7ad",
            "source": "https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a",
            "deprecated": false,
            "signature_version": "v1",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "49925043302351673514388068494701907030",
                    "161712808870032329900961784810405018411",
                    "121485490807141736114950494978058559156",
                    "7489023390805984363603892804880154015",
                    "202644202232952523655974633013653707746",
                    "138619896882174347564468407303695257759",
                    "15990234950511709168994928365836356022",
                    "256898133550272973989357990071546787788",
                    "312328057604315597105613547714626917165",
                    "333854538769822575592451592026482133150",
                    "311166430157540248862665973352097654759",
                    "219884059926347081211079070659462285352",
                    "147707688935502192171362132058820901553",
                    "165585480514541969929312430367339872957"
                ]
            },
            "target": {
                "file": "libmspack/mspack/chmd.c"
            }
        },
        {
            "id": "CVE-2018-14679-7d4dd999",
            "source": "https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a",
            "deprecated": false,
            "signature_version": "v1",
            "signature_type": "Function",
            "digest": {
                "length": 6599.0,
                "function_hash": "107258753819447024680002702952495521063"
            },
            "target": {
                "file": "libmspack/mspack/chmd.c",
                "function": "chmd_read_headers"
            }
        },
        {
            "id": "CVE-2018-14679-c6a42638",
            "source": "https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a",
            "deprecated": false,
            "signature_version": "v1",
            "signature_type": "Function",
            "digest": {
                "length": 1351.0,
                "function_hash": "190023709558236809867088071942484683680"
            },
            "target": {
                "file": "libmspack/mspack/chmd.c",
                "function": "read_chunk"
            }
        }
    ]
}