Debian update for python2.7



| Updated: 2019-03-18
Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2018-1060
CVE-2018-1061
CVE-2018-14647
CVE-2018-1000802
CWE-ID CWE-20
CWE-611
CWE-77
Exploitation vector Network
Public exploit N/A
Vulnerable software
 python2.7 (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Improper input validation

EUVDB-ID: #VU12283

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1060

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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.

Mitigation

Update the affected package to version: 2.7.13-2+deb9u3.

Vulnerable software versions

python2.7 (Debian package): 2.7.1~rc1-1 - 2.7.13-2

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4306


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Improper input validation

EUVDB-ID: #VU12282

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1061

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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.

Mitigation

Update the affected package to version: 2.7.13-2+deb9u3.

Vulnerable software versions

python2.7 (Debian package): 2.7.1~rc1-1 - 2.7.13-2

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4306


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) XXE attack

EUVDB-ID: #VU15760

Risk: Low

CVSSv4.0: 4.6 [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/E:U/U:Clear]

CVE-ID: CVE-2018-14647

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

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.

Mitigation

Update the affected package to version: 2.7.13-2+deb9u3.

Vulnerable software versions

python2.7 (Debian package): 2.7.1~rc1-1 - 2.7.13-2

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4306


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Command injection

EUVDB-ID: #VU15794

Risk: Low

CVSSv4.0: 6.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1000802

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The vulnerability exists due to command injection in shutil module (make_archive function). A remote attacker can supply passage of unfiltered user input to the function and inject arbitrary commands to access arbitrary data or cause the service to crash.

Mitigation

Update the affected package to version: 2.7.13-2+deb9u3.

Vulnerable software versions

python2.7 (Debian package): 2.7.1~rc1-1 - 2.7.13-2

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4306


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###