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CVE-2021-28902 (GCVE-0-2021-28902)
Vulnerability from cvelistv5 – Published: 2021-05-20 18:36 – Updated: 2024-08-03 21:55
VLAI?
EPSS
Summary
In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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SUSE-SU-2022:3245-1
Vulnerability from csaf_suse - Published: 2022-09-12 07:01 - Updated: 2022-09-12 07:01Summary
Security update for libyang
Notes
Title of the patch
Security update for libyang
Description of the patch
This update for libyang fixes the following issues:
- CVE-2021-28906: Fixed missing check in read_yin_leaf that can lead to DoS (bsc#1186378)
- CVE-2021-28904: Fixed missing check in ext_get_plugin that lead to DoS (bsc#1186376).
- CVE-2021-28903: Fixed stack overflow in lyxml_parse_mem (bsc#1186375).
- CVE-2021-28902: Fixed missing check in read_yin_container that can lead to DoS (bsc#1186374).
Patchnames
SUSE-2022-3245,SUSE-SLE-Module-Server-Applications-15-SP3-2022-3245,SUSE-SLE-Module-Server-Applications-15-SP4-2022-3245,openSUSE-SLE-15.3-2022-3245,openSUSE-SLE-15.4-2022-3245
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
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"references": [
{
"category": "external",
"summary": "CVE-2021-28902",
"url": "https://www.suse.com/security/cve/CVE-2021-28902"
},
{
"category": "external",
"summary": "SUSE Bug 1186374 for CVE-2021-28902",
"url": "https://bugzilla.suse.com/1186374"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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"category": "impact",
"date": "2022-09-12T07:01:51Z",
"details": "important"
}
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"title": "CVE-2021-28902"
},
{
"cve": "CVE-2021-28903",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-28903"
}
],
"notes": [
{
"category": "general",
"text": "A stack overflow in libyang \u003c= v1.0.225 can cause a denial of service through function lyxml_parse_mem(). lyxml_parse_elem() function will be called recursively, which will consume stack space and lead to crash.",
"title": "CVE description"
}
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"summary": "SUSE Bug 1186375 for CVE-2021-28903",
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"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"date": "2022-09-12T07:01:51Z",
"details": "important"
}
],
"title": "CVE-2021-28903"
},
{
"cve": "CVE-2021-28904",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-28904"
}
],
"notes": [
{
"category": "general",
"text": "In function ext_get_plugin() in libyang \u003c= v1.0.225, it doesn\u0027t check whether the value of revision is NULL. If revision is NULL, the operation of strcmp(revision, ext_plugins[u].revision) will lead to a crash.",
"title": "CVE description"
}
],
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"url": "https://www.suse.com/security/cve/CVE-2021-28904"
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"summary": "SUSE Bug 1186376 for CVE-2021-28904",
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"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"date": "2022-09-12T07:01:51Z",
"details": "important"
}
],
"title": "CVE-2021-28904"
},
{
"cve": "CVE-2021-28906",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-28906"
}
],
"notes": [
{
"category": "general",
"text": "In function read_yin_leaf() in libyang \u003c= v1.0.225, it doesn\u0027t check whether the value of retval-\u003eext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval-\u003eext[r]-\u003eflags that results in a crash.",
"title": "CVE description"
}
],
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{
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"url": "https://www.suse.com/security/cve/CVE-2021-28906"
},
{
"category": "external",
"summary": "SUSE Bug 1186378 for CVE-2021-28906",
"url": "https://bugzilla.suse.com/1186378"
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{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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GHSA-WCMM-C9RC-QJCJ
Vulnerability from github – Published: 2022-05-24 19:02 – Updated: 2022-05-24 19:02
VLAI?
Details
In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
Severity ?
7.5 (High)
{
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"id": "GHSA-wcmm-c9rc-qjcj",
"modified": "2022-05-24T19:02:50Z",
"published": "2022-05-24T19:02:50Z",
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CNVD-2021-37200
Vulnerability from cnvd - Published: 2021-05-26
VLAI Severity ?
Title
libyang存在未明漏洞(CNVD-2021-37200)
Description
libyang是一款使用C语言编写的YANG数据建模语言解析器和工具包。
libyang v1.0.225版本及之前版本存在安全漏洞,该漏洞源于read_yin_container函数未检查retval->ext[r]的值是否为NULL。目前没有详细漏洞细节提供。
Severity
中
Patch Name
libyang存在未明漏洞(CNVD-2021-37200)的补丁
Patch Description
libyang是一款使用C语言编写的YANG数据建模语言解析器和工具包。
libyang v1.0.225版本及之前版本存在安全漏洞,该漏洞源于read_yin_container函数未检查retval->ext[r]的值是否为NULL。目前没有详细漏洞细节提供。目前,供应商发布了安全公告及相关补丁信息,修复了此漏洞。
Formal description
目前厂商已发布升级补丁以修复漏洞,补丁获取链接:https://github.com/CESNET/libyang/issues/1454
Reference
https://nvd.nist.gov/vuln/detail/CVE-2021-28902
Impacted products
| Name | libyang libyang <=v1.0.225 |
|---|
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GSD-2021-28902
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
Aliases
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},
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"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2022-04-05T18:07Z",
"publishedDate": "2021-05-20T19:15Z"
}
}
}
FKIE_CVE-2021-28902
Vulnerability from fkie_nvd - Published: 2021-05-20 19:15 - Updated: 2024-11-21 06:00
Severity ?
Summary
In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://github.com/CESNET/libyang/issues/1454 | Exploit, Issue Tracking, Third Party Advisory | |
| cve@mitre.org | https://security.gentoo.org/glsa/202107-54 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/CESNET/libyang/issues/1454 | Exploit, Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.gentoo.org/glsa/202107-54 | Third Party Advisory |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6CFE711D-6C8F-4F0F-B53E-BB952DC1FF39",
"versionEndIncluding": "1.0.225",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In function read_yin_container() in libyang \u003c= v1.0.225, it doesn\u0027t check whether the value of retval-\u003eext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval-\u003eext[r]-\u003eflags that results in a crash."
},
{
"lang": "es",
"value": "En la funci\u00f3n read_yin_container() en libyang versiones anteriores a v1.0.225 incluy\u00e9ndola, no comprueba si el valor de retval-)ext[r] es NULL.\u0026#xa0;En algunos casos, puede ser NULL, lo que conlleva a una operaci\u00f3n de retval-)ext [r]-)flags que resulta en un bloqueo"
}
],
"id": "CVE-2021-28902",
"lastModified": "2024-11-21T06:00:22.280",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
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"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
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"cvssMetricV31": [
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
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},
"published": "2021-05-20T19:15:07.590",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Issue Tracking",
"Third Party Advisory"
],
"url": "https://github.com/CESNET/libyang/issues/1454"
},
{
"source": "cve@mitre.org",
"tags": [
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"url": "https://security.gentoo.org/glsa/202107-54"
},
{
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"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
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"value": "CWE-252"
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],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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