SB2019100318 - Multiple vulnerabilities in libpcap

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Main Vulnerability Database SB2019100318

SB2019100318 - Multiple vulnerabilities in libpcap

Published: October 3, 2019 Updated: October 27, 2019

Security Bulletin ID SB2019100318
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 17% Low 83%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2019-15165)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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

The vulnerability exists due to a boundary error within the sf-pcapng.c in libpcap when processing the PHB header length before allocating memory. A remote attacker can pass specially crafted data to the application that uses the vulnerable library, trigger memory corruption and perform denial of service (DoS) attack.


2) Out-of-bounds read (CVE-ID: CVE-2018-16301)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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

The vulnerability exists due to a boundary condition in libpcap when during pcapng reading. A remote attacker can pass specially crafted data to the application that uses the affected library, trigger out-of-bounds read error and read contents of memory on the system or crash the application.


3) Input validation error (CVE-ID: CVE-2019-15161)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


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

The vulnerability exists due to insufficient validation of user-supplied input within the rpcapd/daemon.c in libpcap. A remote attacker can send specially crafted request to the application and gain access to sensitive information.


4) Insufficient verification of data authenticity (CVE-ID: CVE-2019-15162)

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to enumerate users on the system.

The vulnerability exists within the rpcapd/daemon.c in libpcap on non-Windows platforms due to the application provides details about failed authenticated attempts. A remote attacker can enumerate users on the system.


5) NULL pointer dereference (CVE-ID: CVE-2019-15163)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


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

The vulnerability exists due to a NULL pointer dreference error within the rpcapd/daemon.c in libpcap if a crypt() call fails. A remote attacker can perform a denial of service (DoS) attack.


6) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2019-15164)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear


The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the rpcapd/daemon.c in libpcap when processing URL as a capture source. A remote attacker can trick the victim to use a specially crafted URL to extract information.


Remediation

Install update from vendor's website.

References