a. ESX/ESXi Socket Exhaustion   By sending malicious network traffic to an ESXi or ESX host an  attacker could exhaust the available sockets which would prevent  further connections to the host. In the event a host becomes  inaccessible its virtual machines will continue to run and have  network connectivity but a reboot of the ESXi or ESX host may be  required in order to be able to connect to the host again.

 ESXi and ESX hosts may intermittently lose connectivity caused by  applications that do not correctly close sockets. If this occurs an  error message similar to the following may be written to the vpxa  log :
      socket() returns -1 (Cannot allocate memory)

  An error message similar to the following may be written to the   vmkernel logs :

     socreate(type=2, proto=17) failed with error 55

  VMware would like to thank Jimmy Scott at inet-solutions.be for   reporting this issue to us.

  The Common Vulnerabilities and Exposures Project (cve.mitre.org) has   assigned the name CVE-2011-1785 to this issue.

b. Likewise package update    Updates to the vmware-esx-likewise-openldap and   vmware-esx-likewise-krb5 packages address several security issues.

  One of the vulnerabilities is specific to Likewise while the other   vulnerabilities are present in the MIT version of krb5.
  An incorrect assert() call in Likewise may lead to a termination   of the Likewise-open lsassd service if a username with an illegal   byte sequence is entered for user authentication when logging in to   the Active Directory domain of the ESXi/ESX host. This would lead to   a denial of service.
  The MIT-krb5 vulnerabilities are detailed in MITKRB5-SA-2010-007.

  The Common Vulnerabilities and Exposures project (cve.mitre.org) has   assigned the names CVE-2011-1786 (Likewise-only issue),   CVE-2010-1324, CVE-2010-1323, CVE-2010-4020, CVE-2010-4021 to these   issues.

c. ESX third-party update for Service Console kernel    The Service Console kernel is updated to include a fix for a   security issue.
    The Common Vulnerabilities and Exposures project (cve.mitre.org) has   assigned the name CVE-2010-2240 to this issue.

The remote VMware ESX / ESXi host is missing a security-related patch.
It is, therefore, affected by multiple vulnerabilities :

  - Multiple forgery vulnerabilities exist in the bundled     version of MIT Kerberos 5 (krb5). An attacker can     exploit these issues to impersonate a client, escalate     privileges, and disclose sensitive information.
    (CVE-2010-1323, CVE-2010-1324, CVE-2010-4020,     CVE-2010-4021)

  - A local arbitrary code execution vulnerability exists in     the Kernel in the do_anonymous_page() function due to     improper separation of the stack and the heap. A local     attacker can exploit this vulnerability to execute     arbitrary code. (CVE-2010-2240)

  - A denial of service vulnerability exists that allows a     remote attacker to exhaust available sockets, preventing     further connections. (CVE-2011-1785)

  - A denial of service vulnerability exists in the bundled     version of lsassd in Likewise Open. A remote attacker     can exploit this, via an Active Directory login attempt     that provides a username containing an invalid byte     sequence, to cause a daemon crash. (CVE-2011-1786)

Multiple vulnerabilities were discovered and corrected in krb5 :

An unauthenticated remote attacker could alter a SAM-2 challenge, affecting the prompt text seen by the user or the kind of response sent to the KDC. Under some circumstances, this can negate the incremental security benefit of using a single-use authentication mechanism token. An unauthenticated remote attacker has a 1/256 chance of forging KRB-SAFE messages in an application protocol if the targeted pre-existing session uses an RC4 session key. Few application protocols use KRB-SAFE messages (CVE-2010-1323).

An unauthenticated remote attacker can forge GSS tokens that are intended to be integrity-protected but unencrypted, if the targeted pre-existing application session uses a DES session key. An authenticated remote attacker can forge PACs if using a KDC that does not filter client-provided PAC data. This can result in privilege escalation against a service that relies on PAC contents to make authorization decisions. An unauthenticated remote attacker has a 1/256 chance of swapping a client-issued KrbFastReq into a different KDC-REQ, if the armor key is RC4. The consequences are believed to be minor (CVE-2010-1324).

An authenticated remote attacker that controls a legitimate service principal has a 1/256 chance of forging the AD-SIGNEDPATH signature if the TGT key is RC4, allowing it to use self-generated evidence tickets for S4U2Proxy, instead of tickets obtained from the user or with S4U2Self. Configurations using RC4 for the TGT key are believed to be rare. An authenticated remote attacker has a 1/256 chance of forging AD-KDC-ISSUED signatures on authdata elements in tickets having an RC4 service key, resulting in privilege escalation against a service that relies on these signatures. There are no known uses of the KDC-ISSUED authdata container at this time (CVE-2010-4020.

An authenticated remote attacker that controls a legitimate service principal could obtain a valid service ticket to itself containing valid KDC-generated authorization data for a client whose TGS-REQ it has intercepted. The attacker could then use this ticket for S4U2Proxy to impersonate the targeted client even if the client never authenticated to the subverted service. The vulnerable configuration is believed to be rare (CVE-2010-4021).

The updated packages have been patched to correct this issue.

Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC).

Multiple checksum validation flaws were discovered in the MIT Kerberos implementation. A remote attacker could use these flaws to tamper with certain Kerberos protocol packets and, possibly, bypass authentication mechanisms in certain configurations using Single-use Authentication Mechanisms. (CVE-2010-1323)

Red Hat would like to thank the MIT Kerberos Team for reporting these issues.

All krb5 users should upgrade to these updated packages, which contain a backported patch to correct these issues. After installing the updated packages, the krb5kdc daemon will be restarted automatically.

Multiple remote vulnerabilities in the MIT krb5 package have been fixed. They affect client as well as server software. CVE-2010-1323, CVE-2010-1324,CVE-2010-4020 and CVE-2010-4021 have been assigned to this issue.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
53592	VMSA-2011-0007 : VMware ESXi and ESX Denial of Service and third-party updates for Likewise components and ESX Service Console	Nessus	VMware ESX Local Security Checks	2011/4/29	2021/1/6	medium
89676	VMware ESX / ESXi Multiple Vulnerabilities (VMSA-2011-0007) (remote check)	Nessus	Misc.	2016/3/4	2021/1/6	high
50849	Mandriva Linux Security Advisory : krb5 (MDVSA-2010:246)	Nessus	Mandriva Local Security Checks	2010/12/1	2021/1/6	medium
50863	CentOS 4 / 5 : krb5 (CESA-2010:0926)	Nessus	CentOS Local Security Checks	2010/12/2	2021/1/4	medium
75559	openSUSE Security Update : krb5 (openSUSE-SU-2010:1053-1)	Nessus	SuSE Local Security Checks	2014/6/13	2021/1/14	medium

检测

插件搜索

medium

high

medium

medium

medium