SB2018092802 - Debian update for python3.5
Published: September 28, 2018 Updated: March 18, 2019
Security Bulletin ID
SB2018092802
Severity
High
Patch available
YES
Number of vulnerabilities
4
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2017-1000158)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.The weakness exists due to an integer overflow in the PyString_DecodeEscape function in stringobject.c. A remote attacker can trigger heap-based buffer overflow and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
2) Improper input validation (CVE-ID: CVE-2018-1060)
The vulnerability allows a remote attacker to cause DoS condition on he target system.The weakness exists due to the way catastrophic backtracking was implemented in apop() method in pop3lib. A remote attacker can cause the service to crash.
3) Improper input validation (CVE-ID: CVE-2018-1061)
The vulnerability allows a remote attacker to cause DoS condition on he target system.The weakness exists due to the way catastrophic backtracking was implemented in python's difflib.IS_LINE_JUNK method difflib. A remote attacker can cause the service to crash.
4) XXE attack (CVE-ID: CVE-2018-14647)
The vulnerability allows a remote attacker to conduct XXE-attack.
The vulnerability exists due to improper handling of XML External Entities (XXEs) when parsing an XML file. A remote attacker can trick the victim into open an XML file that submits malicious input, trigger pathological hash collisions in Expat's internal data structures, consume large amounts CPU and RAM, and cause a denial of service (DoS) condition.
Remediation
Install update from vendor's website.