exploit the possibilities

Ubuntu Security Notice USN-4294-1

Ubuntu Security Notice USN-4294-1
Posted Mar 2, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4294-1 - It was discovered that OpenSMTPD mishandled certain input. A remote, unauthenticated attacker could use this vulnerability to execute arbitrary shell commands as any non-root user. It was discovered that OpenSMTPD did not properly handle hardlinks under certain conditions. An unprivileged local attacker could read the first line of any file on the filesystem.

tags | advisory, remote, arbitrary, shell, local, root
systems | linux, ubuntu
advisories | CVE-2020-8793, CVE-2020-8794
MD5 | 4dae00ef525530e6ea55476c447cd9fd

Ubuntu Security Notice USN-4294-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4294-1
March 02, 2020

OpenSMTPD vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in opensmtpd.

Software Description:
- opensmtpd: secure, reliable, lean, and easy-to configure SMTP server

Details:

It was discovered that OpenSMTPD mishandled certain input. A remote,
unauthenticated attacker could use this vulnerability to execute arbitrary
shell commands as any non-root user. (CVE-2020-8794)

It was discovered that OpenSMTPD did not properly handle hardlinks under
certain conditions. An unprivileged local attacker could read the first
line of any file on the filesystem. (CVE-2020-8793)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.10:
opensmtpd 6.0.3p1-6ubuntu0.2

Ubuntu 18.04 LTS:
opensmtpd 6.0.3p1-1ubuntu0.2

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4294-1
CVE-2020-8793, CVE-2020-8794

Package Information:
https://launchpad.net/ubuntu/+source/opensmtpd/6.0.3p1-6ubuntu0.2
https://launchpad.net/ubuntu/+source/opensmtpd/6.0.3p1-1ubuntu0.2
Login or Register to add favorites

File Archive:

January 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jan 1st
    2 Files
  • 2
    Jan 2nd
    0 Files
  • 3
    Jan 3rd
    20 Files
  • 4
    Jan 4th
    4 Files
  • 5
    Jan 5th
    37 Files
  • 6
    Jan 6th
    20 Files
  • 7
    Jan 7th
    4 Files
  • 8
    Jan 8th
    0 Files
  • 9
    Jan 9th
    0 Files
  • 10
    Jan 10th
    18 Files
  • 11
    Jan 11th
    8 Files
  • 12
    Jan 12th
    19 Files
  • 13
    Jan 13th
    31 Files
  • 14
    Jan 14th
    2 Files
  • 15
    Jan 15th
    2 Files
  • 16
    Jan 16th
    2 Files
  • 17
    Jan 17th
    18 Files
  • 18
    Jan 18th
    13 Files
  • 19
    Jan 19th
    15 Files
  • 20
    Jan 20th
    29 Files
  • 21
    Jan 21st
    12 Files
  • 22
    Jan 22nd
    0 Files
  • 23
    Jan 23rd
    0 Files
  • 24
    Jan 24th
    17 Files
  • 25
    Jan 25th
    34 Files
  • 26
    Jan 26th
    0 Files
  • 27
    Jan 27th
    0 Files
  • 28
    Jan 28th
    0 Files
  • 29
    Jan 29th
    0 Files
  • 30
    Jan 30th
    0 Files
  • 31
    Jan 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close