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cnvd-2020-33648
Vulnerability from cnvd
Title: Git输入验证错误漏洞（CNVD-2020-33648）
Description:
Git是一套免费、开源的分布式版本控制系统。
Git中存在输入验证错误漏洞。攻击者可借助特制URL利用该漏洞获取私人证书。
Severity: 中
Patch Name: Git输入验证错误漏洞（CNVD-2020-33648）的补丁
Patch Description:
Git是一套免费、开源的分布式版本控制系统。
Git中存在输入验证错误漏洞。攻击者可借助特制URL利用该漏洞获取私人证书。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/git/git/security/advisories/GHSA-qm7j-c969-7j4q
Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-5260
Impacted products
| Name | ['GIT GIT <=2.17.3', 'GIT GIT <=2.18.2', 'GIT GIT <=2.19.3', 'GIT GIT <=2.20.2', 'GIT GIT <=2.21.1', 'GIT GIT <=2.22.2', 'GIT GIT <=2.23.1', 'GIT GIT <=2.24.1', 'GIT GIT <=2.25.2', 'GIT GIT <=2.26.0'] |
|---|
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CVE-2020-5260 (GCVE-0-2020-5260)
Vulnerability from cvelistv5
Published
2020-04-14 22:50
Modified
2024-08-04 08:22
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
Affected versions of Git have a vulnerability whereby Git can be tricked into sending private credentials to a host controlled by an attacker. Git uses external "credential helper" programs to store and retrieve passwords or other credentials from secure storage provided by the operating system. Specially-crafted URLs that contain an encoded newline can inject unintended values into the credential helper protocol stream, causing the credential helper to retrieve the password for one server (e.g., good.example.com) for an HTTP request being made to another server (e.g., evil.example.com), resulting in credentials for the former being sent to the latter. There are no restrictions on the relationship between the two, meaning that an attacker can craft a URL that will present stored credentials for any host to a host of their choosing. The vulnerability can be triggered by feeding a malicious URL to git clone. However, the affected URLs look rather suspicious; the likely vector would be through systems which automatically clone URLs not visible to the user, such as Git submodules, or package systems built around Git. The problem has been patched in the versions published on April 14th, 2020, going back to v2.17.x. Anyone wishing to backport the change further can do so by applying commit 9a6bbee (the full release includes extra checks for git fsck, but that commit is sufficient to protect clients against the vulnerability). The patched versions are: 2.17.4, 2.18.3, 2.19.4, 2.20.3, 2.21.2, 2.22.3, 2.23.2, 2.24.2, 2.25.3, 2.26.1.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| git | git |
Version: < 2.17.4 Version: >= 2.18.0, < 2.18.3 Version: >= 2.19.0, 2.19.4 Version: >= 2.20.0, < 2.20.3 Version: >= 2.21.0, < 2.21.2 Version: >= 2.22.0, < 2.22.3 Version: >= 2.23.0, < 2.23.2 Version: >= 2.24.0, < 2.24.2 Version: >= 2.25.0, < 2.25.3 Version: >= 2.26.0, < 2.26.1 |
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{
"lang": "eng",
"value": "Affected versions of Git have a vulnerability whereby Git can be tricked into sending private credentials to a host controlled by an attacker. Git uses external \"credential helper\" programs to store and retrieve passwords or other credentials from secure storage provided by the operating system. Specially-crafted URLs that contain an encoded newline can inject unintended values into the credential helper protocol stream, causing the credential helper to retrieve the password for one server (e.g., good.example.com) for an HTTP request being made to another server (e.g., evil.example.com), resulting in credentials for the former being sent to the latter. There are no restrictions on the relationship between the two, meaning that an attacker can craft a URL that will present stored credentials for any host to a host of their choosing. The vulnerability can be triggered by feeding a malicious URL to git clone. However, the affected URLs look rather suspicious; the likely vector would be through systems which automatically clone URLs not visible to the user, such as Git submodules, or package systems built around Git. The problem has been patched in the versions published on April 14th, 2020, going back to v2.17.x. Anyone wishing to backport the change further can do so by applying commit 9a6bbee (the full release includes extra checks for git fsck, but that commit is sufficient to protect clients against the vulnerability). The patched versions are: 2.17.4, 2.18.3, 2.19.4, 2.20.3, 2.21.2, 2.22.3, 2.23.2, 2.24.2, 2.25.3, 2.26.1."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-20: Improper Input Validation"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/git/git/security/advisories/GHSA-qm7j-c969-7j4q",
"refsource": "CONFIRM",
"url": "https://github.com/git/git/security/advisories/GHSA-qm7j-c969-7j4q"
},
{
"name": "https://github.com/git/git/commit/9a6bbee8006c24b46a85d29e7b38cfa79e9ab21b",
"refsource": "MISC",
"url": "https://github.com/git/git/commit/9a6bbee8006c24b46a85d29e7b38cfa79e9ab21b"
},
{
"name": "https://lore.kernel.org/git/xmqqy2qy7xn8.fsf@gitster.c.googlers.com/",
"refsource": "MISC",
"url": "https://lore.kernel.org/git/xmqqy2qy7xn8.fsf@gitster.c.googlers.com/"
},
{
"name": "DSA-4657",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2020/dsa-4657"
},
{
"name": "[debian-lts-announce] 20200415 [SECURITY] [DLA 2177-1] git security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2020/04/msg00010.html"
},
{
"name": "[oss-security] 20200415 CVE-2020-5260: Git: malicious URLs may cause Git to present stored credentials to the wrong server",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/04/15/5"
},
{
"name": "http://packetstormsecurity.com/files/157250/Git-Credential-Helper-Protocol-Newline-Injection.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/157250/Git-Credential-Helper-Protocol-Newline-Injection.html"
},
{
"name": "[oss-security] 20200415 Re: CVE-2020-5260: Git: malicious URLs may cause Git to present stored credentials to the wrong server",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/04/15/6"
},
{
"name": "openSUSE-SU-2020:0524",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00027.html"
},
{
"name": "https://support.apple.com/kb/HT211141",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT211141"
},
{
"name": "FEDORA-2020-cdef88bb89",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XPCEOIFLLEF24L6GLVJVFZX4CREDEHDF/"
},
{
"name": "[oss-security] 20200420 CVE-2020-11008: Git: Malicious URLs can still cause Git to send a stored credential to the wrong server",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/04/20/1"
},
{
"name": "GLSA-202004-13",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202004-13"
},
{
"name": "FEDORA-2020-c6548b488f",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7TVS5UG6JD3MYIGSBKMIOS6AF7CR5IPI/"
},
{
"name": "FEDORA-2020-f6b3b6fb18",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PN3FUOXKX3AXTULYV53ACABER2W2FSOU/"
},
{
"name": "FEDORA-2020-b2a2c830cf",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MOCTR2SEHCPSCOVUQJAGFPGKFMI2VE6V/"
},
{
"name": "USN-4329-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4329-1/"
},
{
"name": "FEDORA-2020-4e093619bb",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/74Q7WVJ6FKLIN62VS2JD2XCNWK5TNKOW/"
},
{
"name": "openSUSE-SU-2020:0598",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00003.html"
}
]
},
"source": {
"advisory": "GHSA-qm7j-c969-7j4q",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2020-5260",
"datePublished": "2020-04-14T22:50:12",
"dateReserved": "2020-01-02T00:00:00",
"dateUpdated": "2024-08-04T08:22:09.095Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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