CVE-2019-14844
Quick assessment
Affected
MIT krb5
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
MIT krb5（又名MIT Kerberos 5）是美国麻省理工（Massachusetts Institute Of Technology）大学的一套网络认证协议，它采用客户端/服务器结构，并且客户端和服务器端均可对对方进行身份认证（即双重验证），可防止窃听、防止replay攻击等。 MIT krb5（Fedora）中存在安全漏洞。远程攻击者可利用该漏洞造成KDC崩溃。
Possible ATT&CK Techniques 1 AI
T1059.003 · Windows Command Shell
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I. Basic Information for CVE-2019-14844
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in, Fedora versions of krb5 from 1.16.1 to, including 1.17.x, in the way a Kerberos client could crash the KDC by sending one of the RFC 4556 "enctypes". A remote unauthenticated user could use this flaw to crash the KDC.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用不正确指定参数的函数调用
Source: CVE Program / CVE List V5
Vulnerability Title
MIT krb5 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MIT krb5（又名MIT Kerberos 5）是美国麻省理工（Massachusetts Institute Of Technology）大学的一套网络认证协议，它采用客户端/服务器结构，并且客户端和服务器端均可对对方进行身份认证（即双重验证），可防止窃听、防止replay攻击等。 MIT krb5（Fedora）中存在安全漏洞。远程攻击者可利用该漏洞造成KDC崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2019-14844
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Patches & Fixes for CVE-2019-14844 (1)
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https://github.com/krb5/krb5/pull/981 x_refsource_MISC
Vendor Advisories for CVE-2019-14844 (2)
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14844 x_refsource_CONFIRM
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https://security.netapp.com/advisory/ntap-20220325-0003/ x_refsource_CONFIRM
Mailing List Discussions for CVE-2019-14844 (3)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/54ZYKEJZ77BXZWGF4NEVKC33ESVROEYC/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDE2QOKK4I4TV4WV74ZQWICZ4HJN2MOK/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4LS5PIJOCNOUZGLO2OBT6GY334PUOSW/ vendor-advisory x_refsource_FEDORA
IV. Related Vulnerabilities
Same product: krb5
V. Comments for CVE-2019-14844
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