SB2017012802 - Multiple vulnerabilities in libical

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Main Vulnerability Database SB2017012802

SB2017012802 - Multiple vulnerabilities in libical

Published: January 28, 2017 Updated: January 30, 2019

Security Bulletin ID SB2017012802
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2016-5823)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a use-after-free error when processing a specially crafted ics file. A remote attackers can cause a denial of service (use-after-free).


2) Use-after-free (CVE-ID: CVE-2016-9584)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a specially crafted ics files. A remote attackers can cause a denial of service (use-after-free) and possibly read heap memory.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


3) Out-of-bounds read (CVE-ID: CVE-2016-5827)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary error in the icaltime_from_string() function. A remote attacker can pass a specially crafted string to the icalparser_parse_string() function, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.


4) Out-of-bounds read (CVE-ID: CVE-2016-5826)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary error in the parser_get_next_char() function. A remote attacker can pass a string to the icalparser_parse_string() function, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.


5) Out-of-bounds read (CVE-ID: CVE-2016-5825)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary error in the icalparser_parse_string function. A remote attacker can create a specially crafted ics file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.


6) Use-after-free (CVE-ID: CVE-2016-5824)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform denial of service attack.

The vulnerability exists due to a use-after-free error when processing ics Calendar files. A remote attackers can trick the victim to open a specially crafted calendar file, trigger user-after-free error and crash the affected application.


Remediation

Install update from vendor's website.

References