CVE-2022-28733 (GCVE-0-2022-28733)
Vulnerability from cvelistv5 – Published: 2023-07-20 00:20 – Updated: 2025-02-13 16:32
VLAI
EPSS
VEX
Title
Integer underflow in grub_net_recv_ip4_packets
Summary
Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-24 19:49 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2022/… | mailing-list |
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CV… | issue-tracking |
| https://security.netapp.com/advisory/ntap-2023082… |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| GNU Project | GNU GRUB |
Affected:
0 , < 2.06-3
(semver)
|
guessed |
Date Public
2022-06-13 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T06:03:52.571Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"mailing-list",
"x_transferred"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
},
{
"tags": [
"issue-tracking",
"x_transferred"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-28733",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-24T19:49:29.972519Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-10-24T19:49:41.076Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"packageName": "grub2",
"platforms": [
"Linux"
],
"product": "GNU GRUB",
"repo": "https://git.savannah.gnu.org/cgit/grub.git",
"vendor": "GNU Project",
"versions": [
{
"lessThan": "2.06-3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Daniel Axtens"
}
],
"datePublic": "2022-06-13T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm-\u003etotal_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-191",
"description": "CWE-191",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-08-25T22:06:12.648Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"mailing-list"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
},
{
"tags": [
"issue-tracking"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
}
],
"title": "Integer underflow in grub_net_recv_ip4_packets"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2022-28733",
"datePublished": "2023-07-20T00:20:02.458Z",
"dateReserved": "2022-04-05T21:59:08.759Z",
"dateUpdated": "2025-02-13T16:32:35.678Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2022-28733",
"date": "2026-09-19",
"epss": "0.01273",
"percentile": "0.6858"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F969F462-AB12-4158-BBA9-A9D828434F9F",
"versionEndExcluding": "2.06-3",
"versionStartIncluding": "2.00",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm-\u003etotal_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer."
}
],
"id": "CVE-2022-28733",
"lastModified": "2024-11-21T06:57:49.677",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9,
"source": "security@ubuntu.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2023-07-20T01:15:10.140",
"references": [
{
"source": "security@ubuntu.com",
"tags": [
"Third Party Advisory"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"source": "security@ubuntu.com",
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
},
{
"source": "security@ubuntu.com",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
}
],
"sourceIdentifier": "security@ubuntu.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-191"
}
],
"source": "security@ubuntu.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-191"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"microsoft_vex": {
"current_release_date": "2026-02-19T01:01:54.000Z",
"cve": "CVE-2022-28733",
"id": "msrc_CVE-2022-28733",
"initial_release_date": "2023-07-01T07:00:00.000Z",
"product_status:fixed": "2",
"product_status:known_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Integer underflow in grub_net_recv_ip4_packets",
"url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2022-28733.json",
"version": "3"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"packageName": "grub2",
"platforms": [
"Linux"
],
"product": "GNU GRUB",
"repo": "https://git.savannah.gnu.org/cgit/grub.git",
"vendor": "GNU Project",
"versions": [
{
"lessThan": "2.06-3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@ubuntu.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F969F462-AB12-4158-BBA9-A9D828434F9F",
"versionEndExcluding": "2.06-3",
"versionStartIncluding": "2.00",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm-\u003etotal_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer."
}
],
"id": "CVE-2022-28733",
"lastModified": "2026-06-17T04:38:56.200",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9,
"source": "security@ubuntu.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-28733",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-24T19:49:29.972519Z",
"version": "2.0.3"
}
}
]
},
"published": "2023-07-20T01:15:10.140",
"references": [
{
"source": "security@ubuntu.com",
"tags": [
"Third Party Advisory"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"source": "security@ubuntu.com",
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
},
{
"source": "security@ubuntu.com",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
}
],
"sourceIdentifier": "security@ubuntu.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-191"
}
],
"source": "security@ubuntu.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-191"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2025-11-21T15:47:48+00:00",
"cve": "CVE-2022-28733",
"id": "CVE-2022-28733",
"initial_release_date": "2022-06-07T00:00:00+00:00",
"product_status:fixed": "413",
"product_status:known_not_affected": "64",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "grub2: Integer underflow in grub_net_recv_ip4_packets",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-28733.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-13T23:53:14Z",
"cve": "CVE-2022-28733",
"id": "CVE-2022-28733",
"initial_release_date": "2023-02-15T03:26:30Z",
"product_status:known_affected": "353",
"product_status:recommended": "727",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-28733",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-28733.json",
"version": "57"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T06:03:52.571Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"mailing-list",
"x_transferred"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
},
{
"tags": [
"issue-tracking",
"x_transferred"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-28733",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-24T19:49:29.972519Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-10-24T19:49:36.727Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"packageName": "grub2",
"platforms": [
"Linux"
],
"product": "GNU GRUB",
"repo": "https://git.savannah.gnu.org/cgit/grub.git",
"vendor": "GNU Project",
"versions": [
{
"lessThan": "2.06-3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Daniel Axtens"
}
],
"datePublic": "2022-06-13T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm-\u003etotal_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-191",
"description": "CWE-191",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-08-25T22:06:12.648Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"mailing-list"
],
"url": "https://www.openwall.com/lists/oss-security/2022/06/07/5"
},
{
"tags": [
"issue-tracking"
],
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733"
},
{
"url": "https://security.netapp.com/advisory/ntap-20230825-0002/"
}
],
"title": "Integer underflow in grub_net_recv_ip4_packets"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2022-28733",
"datePublished": "2023-07-20T00:20:02.458Z",
"dateReserved": "2022-04-05T21:59:08.759Z",
"dateUpdated": "2025-02-13T16:32:35.678Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…