Ubuntu update for tcpdump



Published: 2022-04-11
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-16301
CVE-2020-8037
CWE-ID CWE-125
CWE-770
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Ubuntu
Operating systems & Components / Operating system

tcpdump (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU21949

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-16301

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

Exploit availability: No

Description

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.

Mitigation

Update the affected package tcpdump to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

tcpdump (Ubuntu package): before 4.9.3-4ubuntu0.1

External links

http://ubuntu.com/security/notices/USN-5331-2


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) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU48587

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8037

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

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

The ppp decapsulator in tcpdump 4.9.3 can be convinced to allocate a large amount of memory.

Mitigation

Update the affected package tcpdump to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

tcpdump (Ubuntu package): before 4.9.3-4ubuntu0.1

External links

http://ubuntu.com/security/notices/USN-5331-2


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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