Debian update for curl



Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-16839
CVE-2018-16842
CWE-ID CWE-190
CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
 curl (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU15671

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-16839

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in processing the Curl_auth_create_plain_message name and password when handling malicious input. A remote unauthenticated attacker can send specially crafted SASL password data, trigger memory corruption and execute arbitrary code with elevated privileges. The affected function can be invoked using POP3(S), IMAP(S), or SMTP(S).

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package to version: 7.52.1-5+deb9u8.

Vulnerable software versions

curl (Debian package): 7.52.1-1 - 7.52.1-5

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4331


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) Heap-based buffer overflow

EUVDB-ID: #VU15673

Risk: Low

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

CVE-ID: CVE-2018-16842

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to heap-based buffer over-read in the tool_msgs.c:voutf() function. A remote unauthenticated attacker can specially crafted data, trigger memory corruption to read back out-of-buffer data and cause the service to crash.

Mitigation

Update the affected package to version: 7.52.1-5+deb9u8.

Vulnerable software versions

curl (Debian package): 7.52.1-1 - 7.52.1-5

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4331


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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