CVE-2017-6420

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Source
https://nvd.nist.gov/vuln/detail/CVE-2017-6420
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-6420.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2017-6420
Downstream
Related
Published
2017-08-07T03:29:00Z
Modified
2025-10-07T23:13:31.168593Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

The wwunpack function in libclamav/wwunpack.c in ClamAV 0.99.2 allows remote attackers to cause a denial of service (use-after-free) via a crafted PE file with WWPack compression.

References

Affected packages

Git / github.com/cisco-talos/clamav

Affected ranges

Type
GIT
Repo
https://github.com/cisco-talos/clamav
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
dfc00cd3301a42b571454b51a6102eecf58407bc

Affected versions

clamav-0.*

clamav-0.96
clamav-0.96.2
clamav-0.96.3
clamav-0.96.4
clamav-0.96.5
clamav-0.96rc1
clamav-0.96rc2
clamav-0.97
clamav-0.97rc
clamav-0.98-dmgxar
clamav-0.99-beta1

Other

merge-llvm-79908
merge-llvm-80601
merge-llvm-83242
merge-llvm-90002
merge-llvm-91214
merge-llvm-91428
merge-llvm-92222
merge-llvm-94539
merge-llvm-97877
r5076

Database specific 

{
    "vanir_signatures": [
        {
            "signature_version": "v1",
            "digest": {
                "length": 3832.0,
                "function_hash": "139298605883294768074466177189333198170"
            },
            "id": "CVE-2017-6420-8db5ad48",
            "deprecated": false,
            "target": {
                "file": "libclamav/wwunpack.c",
                "function": "wwunpack"
            },
            "signature_type": "Function",
            "source": "https://github.com/cisco-talos/clamav/commit/dfc00cd3301a42b571454b51a6102eecf58407bc"
        },
        {
            "signature_version": "v1",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "35527508808006729459757378903195264297",
                    "136599601490254595440116583910458001390",
                    "213343516002541788284701737169634229176",
                    "38984029225980571671566102348353921465"
                ]
            },
            "id": "CVE-2017-6420-c120f9f5",
            "deprecated": false,
            "target": {
                "file": "libclamav/wwunpack.c"
            },
            "signature_type": "Line",
            "source": "https://github.com/cisco-talos/clamav/commit/dfc00cd3301a42b571454b51a6102eecf58407bc"
        }
    ]
}