CVE-2018-8098

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Source
https://cve.org/CVERecord?id=CVE-2018-8098
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-8098.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-8098
Downstream
Related
Published
2018-03-14T00:29:00Z
Modified
2026-08-18T12:31:30Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Integer overflow in the index.c:read_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an attacker to cause a denial of service (out-of-bounds read) via a crafted repository index file.

Database specific 
{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "9.0"
                },
                {
                    "last_affected":  "9.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "debian:debian_linux"
        }
    ]
}
References

Affected packages

Git / github.com/libgit2/libgit2

Affected ranges

Type
GIT
Repo
https://github.com/libgit2/libgit2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
dd2d5381773ca3f7bc31f56aea6fc067db5ea404
Fixed
3207ddb0103543da8ad2139ec6539f590f9900c1
Fixed
3db1af1f370295ad5355b8f64b865a2a357bcac0
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "0.26.2"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.1.0
v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.2.0
v0.21.0
v0.22.0
v0.22.0-rc1
v0.22.0-rc2
v0.23.0
v0.23.0-rc1
v0.23.0-rc2
v0.24.0
v0.24.0-rc1
v0.26.0
v0.26.0-rc1
v0.26.0-rc2
v0.26.1
v0.27.0-rc1
v0.27.0-rc2
v0.3.0
v0.8.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-8098.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "135896982973916903305795107330050348358",
                "184939043377130665668669129652211017347",
                "307748016171779875675699727869171429237",
                "241739025222590407109663724768545593759",
                "23267720098037586023124815692439880216",
                "24661678461091087705214163136838974316",
                "90907465384696908184435450087934824448",
                "277379174238028553344217817776980333730",
                "119481454443235298950043312408905204454",
                "229678914226100167683291621348395190622",
                "255372000690676535671072658154186099275",
                "165531933752734538812548705048040921207"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2018-8098-29acfe81",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/libgit2/libgit2/commit/3207ddb0103543da8ad2139ec6539f590f9900c1",
        "target":  {
            "file":  "src/index.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "109719023837396517359196467765305835058",
            "length":  2411
        },
        "id":  "CVE-2018-8098-eb1d4f8c",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/libgit2/libgit2/commit/3207ddb0103543da8ad2139ec6539f590f9900c1",
        "target":  {
            "file":  "src/index.c",
            "function":  "read_entry"
        }
    }
]
vanir_signatures_modified 
"2026-08-18T12:31:30Z"