CVE-2023-49062

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Source
https://cve.org/CVERecord?id=CVE-2023-49062
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-49062.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-49062
Published
2023-11-28T15:45:42.674Z
Modified
2026-08-12T14:51:38.515571Z
Summary
[none]
Details

Katran could disclose non-initialized kernel memory as part of an IP header. The issue was present for IPv4 encapsulation and ICMP (v4) Too Big packet generation. After a bpfxdpadjust_head call, Katran code didn’t initialize the Identification field for the IPv4 header, resulting in writing content of kernel memory in that field of IP header. The issue affected all Katran versions prior to commit 6a03106ac1eab39d0303662963589ecb2374c97f

Database specific 
{
    "cna_assigner": "facebook",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "6a03106ac1eab39d0303662963589ecb2374c97f"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49062.json"
}
References

Affected packages

Git / github.com/facebookincubator/katran

Affected ranges

Type
GIT
Repo
https://github.com/facebookincubator/katran
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6a03106ac1eab39d0303662963589ecb2374c97f
Database specific
Show details 
{
    "source": "REFERENCES"
}

Database specific

vanir_signatures 
[
    {
        "target": {
            "file": "katran/lib/bpf/encap_helpers.h",
            "function": "create_v4_hdr"
        },
        "deprecated": false,
        "id": "CVE-2023-49062-104329cb",
        "signature_version": "v1",
        "digest": {
            "function_hash": "274036917422769252756026399020295789019",
            "length": 542.0
        },
        "signature_type": "Function",
        "source": "https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f"
    },
    {
        "target": {
            "file": "katran/lib/bpf/handle_icmp.h",
            "function": "send_icmp4_too_big"
        },
        "deprecated": false,
        "id": "CVE-2023-49062-392dcd0f",
        "signature_version": "v1",
        "digest": {
            "function_hash": "249149259358483581324810609643150645381",
            "length": 1228.0
        },
        "signature_type": "Function",
        "source": "https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f"
    },
    {
        "target": {
            "file": "katran/lib/bpf/encap_helpers.h"
        },
        "deprecated": false,
        "id": "CVE-2023-49062-5caa6ea4",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "266248460249466793020442129638554717551",
                "9357817641529648109675700352851848365",
                "120764303923617098496203738630732246045",
                "126825395228920827902206852815662446651"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f"
    },
    {
        "target": {
            "file": "katran/lib/bpf/handle_icmp.h"
        },
        "deprecated": false,
        "id": "CVE-2023-49062-dc8eabe9",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
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                "288950834237288945314096019309735839908",
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                "180049631676922076303448109167132986868",
                "334614221519709085599252653200111481720",
                "323390141099085544534018329792598241370",
                "179712872402464088708231467153365342517"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/facebookincubator/katran/commit/6a03106ac1eab39d0303662963589ecb2374c97f"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-49062.json"
vanir_signatures_modified 
"2026-08-12T14:51:38Z"