Debian update for memcached



Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2011-4971
CVE-2013-7239
CVE-2013-0179
CWE-ID CWE-805
CWE-287
CWE-126
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

Vendor Debian

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Buffer access with incorrect length value

EUVDB-ID: #VU11318

Risk: Medium

CVSSv4.0: 8.7 [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:A/U:Green]

CVE-ID: CVE-2011-4971

CWE-ID: CWE-805 - Buffer Access with Incorrect Length Value

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the (1) process_bin_sasl_auth, (2) process_bin_complete_sasl_auth, (3) process_bin_update, and (4) process_bin_append_prepend functions due to a large body length value in a packet. A remote attacker can trigger memory corruption and cause the service to crash.

Mitigation

Update the affected package to version: 1.4.5-1+deb6u1, 1.4.13-0.2+deb7u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://code.google.com/archive/p/memcached/issues/192


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. However, a fully functional exploit for this vulnerability is available.

2) Improper authentication

EUVDB-ID: #VU11320

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2013-7239

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication on the target system.

The weakness exists due to allowing wrong credentials access. A remote attacker can send an invalid request with SASL credentials, then send another request with incorrect SASL credentials and bypass authentication.

Mitigation

Update the affected package to version: 1.4.5-1+deb6u1, 1.4.13-0.2+deb7u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://seclists.org/oss-sec/2013/q4/572


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) Buffer over-read

EUVDB-ID: #VU11319

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-2013-0179

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to boundary error in the process_bin_delete function when running in verbose mode. A remote attacker can cause the service to crash via a request to delete a key, which does not account for the lack of a null terminator in the key and triggers buffer over-read when printing to stderr.

Mitigation

Update the affected package to version: 1.4.5-1+deb6u1, 1.4.13-0.2+deb7u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://code.google.com/archive/p/memcached/issues/306


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.



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