The remote NewStart CGSL host, running version MAIN 6.06 (SP), has krb5 packages installed that are affected by multiple vulnerabilities:

  - plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles     Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial     of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related     to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use     cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin     code that is specific to Red Hat. (CVE-2017-15088)

  - The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT     Kerberos 5 (aka krb5) 1.7 through 1.9 frees an invalid pointer, which allows remote attackers to execute     arbitrary code or cause a denial of service (daemon crash) via a crafted request that triggers an error     condition. (CVE-2011-0285)

  - schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly     validate UDP packets before sending responses, which allows remote attackers to cause a denial of service     (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by     krb_pingpong.nasl, a related issue to CVE-1999-0103. (CVE-2002-2443)

  - The (1) ftpd and (2) ksu programs in (a) MIT Kerberos 5 (krb5) up to 1.5, and 1.4.x before 1.4.4, and (b)     Heimdal 0.7.2 and earlier, do not check return codes for setuid calls, which might allow local users to     gain privileges by causing setuid to fail to drop privileges. NOTE: as of 20060808, it is not known     whether an exploitable attack scenario exists for these issues. (CVE-2006-3084)

  - The RPC library in Kerberos 5 1.4 through 1.4.4, and 1.5 through 1.5.1, as used in Kerberos administration     daemon (kadmind) and other products that use this library, calls an uninitialized function pointer in     freed memory, which allows remote attackers to cause a denial of service (crash) and possibly execute     arbitrary code via unspecified vectors. (CVE-2006-6143)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the krb5 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A denial of service flaw was found in MIT Kerberos     krb5kdc service. An authenticated attacker could use     this flaw to cause krb5kdc to exit with an assertion     failure by making an invalid S4U2Self or S4U2Proxy     request.(CVE-2017-11368)

  - An authentication bypass flaw was found in the way     krb5's certauth interface handled the validation of     client certificates. A remote attacker able to     communicate with the KDC could potentially use this     flaw to impersonate arbitrary principals under rare and     erroneous circumstances.(CVE-2017-7562)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Fix CVE-2017-11368 (remote triggerable assertion failure in krb5kdc)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-0666 advisory.

    - Fix CVE-2017-7562 (certauth eku bypass)
    - Fix CVE-2017-11368 (s4u2 request assertion failures)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
301200	NewStart CGSL MAIN 6.06 (SP) : krb5 Multiple Vulnerabilities (NS-SA-2026-0007)	Nessus	NewStart CGSL Local Security Checks	3/6/2026	3/9/2026	critical
118737	EulerOS 2.0 SP2 : krb5 (EulerOS-SA-2018-1354)	Nessus	Huawei Local Security Checks	11/6/2018	7/26/2024	medium
101965	Fedora 26 : krb5 (2017-e5b36383f4)	Nessus	Fedora Local Security Checks	7/26/2017	12/9/2025	medium
102002	Fedora 25 : krb5 (2017-8e9d9771c4)	Nessus	Fedora Local Security Checks	7/27/2017	12/9/2025	medium
109104	Oracle Linux 7 : krb5 (ELSA-2018-0666)	Nessus	Oracle Linux Local Security Checks	4/18/2018	11/1/2024	medium

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