CVE-2018-19837

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Source
https://cve.org/CVERecord?id=CVE-2018-19837
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-19837.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-19837
Downstream
Related
Published
2018-12-04T09:29:00.320Z
Modified
2026-04-16T00:08:15.835710044Z
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

In LibSass prior to 3.5.5, Sass::Eval::operator()(Sass::Binary_Expression*) inside eval.cpp allows attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, because of certain incorrect parsing of '%' as a modulo operator in parser.cpp.

References

Affected packages

Git / github.com/sass/libsass

Affected ranges

Type
GIT
Repo
https://github.com/sass/libsass
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
39e30874b9a5dd6a802c20e8b0470ba44eeba929
Fixed
210fdff7a65370c2ae24e022a2b35da8c423cc5f
Database specific 
{
    "cpe": "cpe:2.3:a:sass-lang:libsass:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.5.5"
        }
    ]
}

Affected versions

2.*
2.1.0-beta
3.*
3.0
3.0.1
3.0.2
3.0rc1
3.0rc2
3.0rc4
3.1-alpha
3.1-alpha2
3.1.0
3.1.0-beta
3.1.0-beta.2
3.2.0
3.2.0-beta.1
3.2.0-beta.2
3.2.0-beta.3
3.2.0-beta.4
3.2.0-beta.5
3.2.0-beta.6
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.3.0
3.3.0-beta1
3.3.0-beta2
3.3.0-beta3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.4.0
3.4.0-RC1
3.4.2
3.5.0
3.5.0.beta.1
3.5.0.beta.2
3.5.0.beta.3
3.5.1
3.5.2
3.5.3
3.5.4
RELEASE-1.*
RELEASE-1.0
v2.*
v2.0

Database specific

vanir_signatures 
[
    {
        "id": "CVE-2018-19837-ae1917b7",
        "deprecated": false,
        "signature_version": "v1",
        "source": "https://github.com/sass/libsass/commit/210fdff7a65370c2ae24e022a2b35da8c423cc5f",
        "digest": {
            "length": 2498.0,
            "function_hash": "165885596483511393063274280585420607993"
        },
        "target": {
            "function": "Parser::parse_value",
            "file": "src/parser.cpp"
        },
        "signature_type": "Function"
    },
    {
        "target": {
            "file": "src/parser.cpp"
        },
        "id": "CVE-2018-19837-c71612b0",
        "signature_version": "v1",
        "source": "https://github.com/sass/libsass/commit/210fdff7a65370c2ae24e022a2b35da8c423cc5f",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "158550758329213429823339009714291952923",
                "248729470278415984234477818821013894605",
                "66451365466247137398889437797457684636",
                "311322115924971552268989963752639181995",
                "7945816132210125360185350847370858332"
            ]
        },
        "deprecated": false,
        "signature_type": "Line"
    }
]
vanir_signatures_modified 
"2026-04-11T18:21:01Z"
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-19837.json"