CVE-2019-18397

A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code by delivering crafted text content to a user, when this content is then rendered by an application that uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in HexChat.

Database specific

{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "10.0"
                },
                {
                    "last_affected":  "10.0"
                },
                {
                    "introduced":  "8.0"
                },
                {
                    "last_affected":  "8.0"
                },
                {
                    "introduced":  "9.0"
                },
                {
                    "last_affected":  "9.0"
                },
                {
                    "introduced":  "10.0"
                },
                {
                    "last_affected":  "10.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "debian:debian_linux"
        }
    ]
}

References

Affected packages

Git / github.com/fribidi/fribidi

Affected ranges

Type

GIT

Repo

https://github.com/fribidi/fribidi

Events

Introduced

d18badec88bca8f6f4149156ebe7f1c6467a7bd8

Last Affected

aac3845708969b9c4bc2874edc4950123595b1b4

Fixed

034c6e9a1d296286305f4cfd1e0072b879f52568

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:gnu:fribidi:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "1.0.0"
        },
        {
            "last_affected":  "1.0.7"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v1.*

v1.0.0

v1.0.1

v1.0.2

v1.0.3

v1.0.4

v1.0.5

v1.0.6

v1.0.7

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18397.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "81998630060188356797033002215980650049",
                "157692335296880058587528312676677773649",
                "254617841547356102856284239003018292264",
                "64856564019526216929120098957523904441"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2019-18397-a4060ad7",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/fribidi/fribidi/commit/034c6e9a1d296286305f4cfd1e0072b879f52568",
        "target":  {
            "file":  "lib/fribidi-bidi.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "306583254731306983363013813531174641007",
            "length":  12887
        },
        "id":  "CVE-2019-18397-dd25e494",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/fribidi/fribidi/commit/034c6e9a1d296286305f4cfd1e0072b879f52568",
        "target":  {
            "file":  "lib/fribidi-bidi.c",
            "function":  "fribidi_get_par_embedding_levels_ex"
        }
    }
]

vanir_signatures_modified

"2026-07-08T17:18:30Z"