Security Bulletin: IBM Flex System Manager (FSM) is affected by multiple vulnerabilities in ntp

Summary

Multiple security vulnerabilities have been discovered in ntp that is embedded in the IBM FSM. This bulletin addresses these issues.

Vulnerability Details

CVEID: CVE-2015-7691**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by an error in ntp_crypto.c. An attacker could exploit this vulnerability using a packet containing an extension field with an invalid value for the length of its value field to cause ntpd to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107449 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-7692**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by an error in ntp_crypto.c. An attacker could exploit this vulnerability using a packet containing an extension field with an invalid value for the length of its value field to cause ntpd to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107450 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-7701**
DESCRIPTION:** Network Time Protocol (NTP) could allow a remote attacker to obtain sensitive information, caused by a memory leak in CRYPTO_ASSOC. An attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107444 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2015-7702**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by an error in ntp_crypto.c. An attacker could exploit this vulnerability using a packet containing an extension field with an invalid value for the length of its value field to cause ntpd to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107451 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-7703**
DESCRIPTION:** Network Time Protocol (NTP) could allow a remote attacker to traverse directories on the system, caused by the failure to enforce local access only of the “pidfile” and “driftfile” configuration directives. An attacker could exploit this vulnerability to view arbitrary files on the system.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107445 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2015-7704**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by an error in the rate-limiting mechanism. By sending spoofed Kiss-o’-Death packets, an attacker could exploit this vulnerability to disable NTP at a victim client.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107446 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2015-7705**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by an error in the rate-limiting mechanism. By “priming the pump” and sending a valid Kiss-o’-Death packet, an attacker could exploit this vulnerability to disable NTP at a victim client and prevent the client from updating its local clock.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107447 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2015-7848**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by an multiple integer overflows when processing malicious packets. By sending a specially crafted private mode packet, an attacker could exploit this vulnerability to cause the application to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107443 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-7849**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a buffer overflow, caused by a use-after-free in the password management functionality. By sending a specially crafted key file, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107442 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2015-7850**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by an error in the remote configuration functionality. By sending a specially crafted configuration file, an attacker could exploit this vulnerability to cause the application to enter into an infinite loop.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107441 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-7851**
DESCRIPTION:** Network Time Protocol (NTP) could allow a remote attacker to traverse directories on the system. An attacker could send a specially-crafted URL request to the save_config function containing directory traversal sequences to view arbitrary files on the system.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107440 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2015-7852**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a buffer overflow, caused by improper bounds checking by thecookedprint functionality. By sending an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107439 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2015-7853**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a buffer overflow, caused by improper bounds checking by the refclock of ntpd. By sending an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107438 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2015-7854**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the password management functionality. By using a specially crafted key file, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107437 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2015-7855**
DESCRIPTION:** Network Time Protocol (NTP) is vulnerable to a denial of service, caused by ASSERT botch instead of returning FAIL on some invalid values by the decodenetnum() function. An attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107448 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-7871**
DESCRIPTION:** Network Time Protocol (NTP) could allow a remote attacker to bypass restrictions, caused by a logic error when handling specific crypto-NAK packets. By sending an NTP symmetric active crypto-NAK packet, an attacker could exploit this vulnerability to bypass the symmetric association authentication process and make arbitrary changes to system time.
CVSS Base Score: 7.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107436 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L)

Affected Products and Versions

Flex System Manager 1.3.4.x
Flex System Manager 1.3.3.x
Flex System Manager 1.3.2.x
Flex System Manager 1.3.1.x
Flex System Manager 1.3.0.x
Flex System Manager 1.2.x.x
Flex System Manager 1.1.x.x

Remediation/Fixes

Product

| VRMF| APAR| Remediation
—|—|—|—
Flex System Manager| 1.3.4.x| IT14752| fsmfix1.3.4.0_IT13228_IT14752
Flex System Manager| 1.3.3.x| IT14752| fsmfix1.3.3.0_IT13228_IT14752
Flex System Manager| 1.3.2.x| IT14752| fsmfix1.3.2.0_IT13228_IT14752
Flex System Manager| 1.3.1.x| IT14752| IBM recommends upgrading to a fixed, supported version/release and following the appropriate remediation for all vulnerabilities.
Flex System Manager| 1.3.0.x| IT14752| IBM recommends upgrading to a fixed, supported version/release and following the appropriate remediation for all vulnerabilities.
Flex System Manager| 1.2.x.x| IT14752| IBM recommends upgrading to a fixed, supported version/release and following the appropriate remediation for all vulnerabilities.
Flex System Manager| 1.1.x.x| IT14752| IBM recommends upgrading to a fixed, supported version/release and following the appropriate remediation for all vulnerabilities.

Workarounds and Mitigations

None