The remote host is affected by the vulnerability described in GLSA-200707-11 (MIT Kerberos 5: Arbitrary remote code execution)

    kadmind is affected by multiple vulnerabilities in the RPC library     shipped with MIT Kerberos 5. It fails to properly handle zero-length     RPC credentials (CVE-2007-2442) and the RPC library can write past the     end of the stack buffer (CVE-2007-2443). Furthermore kadmind fails to     do proper bounds checking (CVE-2007-2798).
  Impact :

    A remote unauthenticated attacker could exploit these vulnerabilities     to execute arbitrary code with root privileges.
  Workaround :

    There is no known workaround at this time.

David Coffey discovered an uninitialized pointer free flaw in the RPC library used by kadmind. A remote unauthenticated attacker who could access kadmind could trigger the flaw causing kadmind to crash or possibly execute arbitrary code (CVE-2007-2442).

David Coffey also discovered an overflow flaw in the same RPC library.
A remote unauthenticated attacker who could access kadmind could trigger the flaw causing kadmind to crash or possibly execute arbitrary code (CVE-2007-2443).

Finally, a stack-based buffer overflow vulnerability was found in kadmind that allowed an unauthenticated user able to access kadmind the ability to trigger the vulnerability and possibly execute arbitrary code (CVE-2007-2798).

Updated packages have been patched to prevent this issue.

David Coffey discovered an uninitialized pointer free flaw in the RPC library used by kadmind. A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash or potentially execute arbitrary code as root. (CVE-2007-2442)

David Coffey also discovered an overflow flaw in the RPC library used by kadmind. On Scientific Linux, exploitation of this flaw is limited to a denial of service. A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash.
(CVE-2007-2443)

A stack-based buffer overflow flaw was found in kadmind. An authenticated attacker who can access kadmind could trigger this flaw and potentially execute arbitrary code on the Kerberos server.
(CVE-2007-2798)

David Coffey discovered an uninitialized pointer free flaw in the RPC library used by kadmind. On Scientific Linux 4 and 5, glibc detects attempts to free invalid pointers. A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash. (CVE-2007-2442)

David Coffey also discovered an overflow flaw in the RPC library used by kadmind. On Scientific Linux, exploitation of this flaw is limited to a denial of service. A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash.
(CVE-2007-2443)

A stack-based buffer overflow flaw was found in kadmind. An authenticated attacker who can access kadmind could trigger this flaw and potentially execute arbitrary code on the Kerberos server.
(CVE-2007-2798)

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.

The remote MiracleLinux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2008-345:03 advisory.

    Kerberos V5 is a trusted-third-party network authentication system, which can improve your network's     security by eliminating the insecure practice of cleartext passwords.
    - add preliminary patch to fix use of uninitialized pointer / double-free in KDC     (CVE-2008-0062,CVE-2008-0063)
    - add backported patch to fix use-after-free in libgssapi_krb5 (CVE-2007-5901)
    - add backported patch to fix double-free in libgssapi_krb5 (CVE-2007-5971)
    - add preliminary patch to fix incorrect handling of high-numbered descriptors in the RPC library     (CVE-2008-0947)
    - fix storage of delegated krb5 credentials when they've been wrapped up in spnego
    - return a delegated credential handle even if the application didn't pass a location to store the flags     which would be used to indicate that credentials were delegated
    - add patch to fall back to TCP kpasswd servers for kdc-unreachable, can't-resolve-server, and response-     too-big errors
    - use the right sequence numbers when generating password-set/change requests for kpasswd servers after     the first one
    - backport from 1.6.3 to initialize a library-allocated get_init_creds_opt structure the same way we would     one which was allocated by the calling application, to restore kinit's traditional behavior of doing a     password change right when it detects an expired password
    - ftpd: also do PAM session and credential management when ftp clients use strong authentication
    - update to revised patch for CVE-2007-3999
    - fix omission of files created by the db2 plugin when labeling
    - make krb5-workstation depend on the PAM configuration file used by login.krb5
    - fix omission of kadmin log file when labeling
    - add preliminary patch to fix buffer overflow in rpcsec_gss implementation in libgssrpc (CVE-2007-3999)     and write through uninitialized pointer in kadmind (CVE-2007-4000)
    - kdc: default to listening for TCP clients as well
    - login: change to the user's home directory after dropping privileges, not before
    - turn off the ldap features
    - add a patch to allow applications to try to use a key with kvno=0, if found, in place of the right     version for a request
    - incorporate fixes for MITKRB5-SA-2007-004 (CVE-2007-2442,CVE-2007-2443) and MITKRB5-SA-2007-005     (CVE-2007-2798)
    - reintroduce missing %postun for the non-split_workstation case
    - add missing pam-devel build requirement, force selinux-or-fail build
    - label all files at creation-time according to the SELinux policy
    - perform PAM account / session management in krshd
    - perform PAM authentication and account / session management in ftpd
    - perform PAM authentication, account / session management, and password- changing in login.krb5
    - preprocess kerberos.ldif into a format FDS will like better, and include that as a doc file as well
    - switch man pages to being generated with the right paths in them
    - drop old, incomplete SELinux patch
    - add patch from Greg Hudson to make srvtab routines report missing-file errors at same point that keytab     routines do
    - pull patch from svn to undo unintentional chattiness in ftp
    - pull patch from svn to handle NULL krb5_get_init_creds_opt structures better in a couple of places where     they're expected
    - update to 1.6.1
    - drop no-longer-needed patches for CVE-2007-0956,CVE-2007-0957,CVE-2007-1216
    - drop patch for sendto bug in 1.6, fixed in 1.6.1
    - kadmind.init: don't fail outright if the default principal database isn't there if it looks like we     might be using the kldap plugin
    - kadmind.init: attempt to extract the key for the host-specific kadmin service when we try to create the     keytab
    - omit dependent libraries from the krb5-config --libs output, as using shared libraries (no more static     libraries) makes them unnecessary and they're not part of the libkrb5 interface (strips out libkeyutils,     libresolv, libdl)
    - pull in keyutils as a build requirement to get the KEYRING: ccache type, because we've merged
    - fix an uninitialized length value which could cause a crash when parsing key data coming from a     directory server
    - correct a typo in the krb5.conf man page (ldap_server->ldap_servers)
    - move the default acl_file, dict_file, and admin_keytab settings to the part of the default/example     kdc.conf where they'll actually have an effect
    - add patch to correct unauthorized access via krb5-aware telnetdaemon (CVE-2007-0956)
    - add patch to fix buffer overflow in krb5kdc and kadmind(CVE-2007-0957)
    - add patch to fix double-free in kadmind (CVE-2007-1216)
    - back out buildrequires: keyutils-libs-devel for now
    - add buildrequires: on keyutils-libs-devel to enab

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

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

Several remote vulnerabilities have been discovered in the MIT reference implementation of the Kerberos network authentication protocol suite, which may lead to the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2007-2442     Wei Wang discovered that the free of an uninitialised     pointer in the Kerberos RPC library may lead to the     execution of arbitrary code.

  - CVE-2007-2443     Wei Wang discovered that insufficient input sanitising     in the Kerberos RPC library may lead to the execution of     arbitrary code.

  - CVE-2007-2798     It was discovered that a buffer overflow in the Kerberos     administration daemon may lead to the execution of     arbitrary code.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
25793	GLSA-200707-11 : MIT Kerberos 5: Arbitrary remote code execution	Nessus	Gentoo Local Security Checks	2007/7/27	2021/1/6	high
25603	Mandrake Linux Security Advisory : krb5 (MDKSA-2007:137)	Nessus	Mandriva Local Security Checks	2007/6/27	2021/1/6	high
60218	Scientific Linux Security Update : krb5 on SL3.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	high
60219	Scientific Linux Security Update : krb5 on SL5.x, SL4.x, SL3.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	high
301200	NewStart CGSL MAIN 6.06 (SP) : krb5 Multiple Vulnerabilities (NS-SA-2026-0007)	Nessus	NewStart CGSL Local Security Checks	2026/3/6	2026/3/9	critical
284373	MiracleLinux 3 : krb5-1.6.1-17AXS3.1 (AXSA:2008-345:03)	Nessus	Miracle Linux Local Security Checks	2026/1/14	2026/1/14	critical
25628	Debian DSA-1323-1 : krb5 - several vulnerabilities	Nessus	Debian Local Security Checks	2007/7/1	2021/1/4	high

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