USN-3555-1: w3m vulnerabilities

Ubuntu Security Notice USN-3555-1

1st February, 2018

w3m vulnerabilities

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

  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in w3m.

Software description

  • w3m
    – WWW browsable pager with excellent tables/frames support

Details

It was discovered that w3m incorrectly handled certain inputs.
An attacker could possibly use this to cause a denial of service.
(CVE-2018-6196, CVE-2018-6197)

It was discovered that w3m incorrectly handled temporary files.
An attacker could possibly use this to overwrite arbitrary files.
(CVE-2018-6198)

Update instructions

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

Ubuntu 17.10:
w3m

0.5.3-34ubuntu0.1
Ubuntu 16.04 LTS:
w3m

0.5.3-26ubuntu0.2
Ubuntu 14.04 LTS:
w3m

0.5.3-15ubuntu0.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2018-6196,

CVE-2018-6197,

CVE-2018-6198

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USN-3555-2: w3m vulnerabilities

Ubuntu Security Notice USN-3555-2

1st February, 2018

w3m vulnerabilities

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

  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in w3m.

Software description

  • w3m
    – WWW browsable pager with excellent tables/frames support

Details

USN-3555-2 fixed vulnerabilities in w3m. This update
provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:

It was discovered that w3m incorrectly handled certain inputs.
An attacker could possibly use this to cause a denial of service.
(CVE-2018-6196, CVE-2018-6197)

It was discovered that w3m incorrectly handled temporary files.
An attacker could possibly use this to overwrite arbitrary files.
(CVE-2018-6198)

Update instructions

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

Ubuntu 12.04 LTS:
w3m

0.5.3-5ubuntu1.3

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2018-6196,

CVE-2018-6197,

CVE-2018-6198

Read More

USN-3556-1: Dovecot vulnerability

Ubuntu Security Notice USN-3556-1

1st February, 2018

dovecot vulnerability

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

  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Dovecot could be made to crash if it received specially crafted input.

Software description

  • dovecot
    – IMAP and POP3 email server

Details

It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to cause a denial of service.

Update instructions

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

Ubuntu 17.10:
dovecot-core

1:2.2.27-3ubuntu1.2
Ubuntu 16.04 LTS:
dovecot-core

1:2.2.22-1ubuntu2.6
Ubuntu 14.04 LTS:
dovecot-core

1:2.2.9-1ubuntu2.3

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2017-15132

Read More

USN-3556-2: Dovecot vulnerabilities

Ubuntu Security Notice USN-3556-2

1st February, 2018

dovecot vulnerabilities

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

  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in Dovecot.

Software description

  • dovecot
    – IMAP and POP3 email server

Details

USN-3556-1 fixed vulnerabilities in Dovecot. This update
provides the corresponding update for Ubuntu 12.04 ESM.

It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to bypass authentication and access
sensitive information. (CVE-2013-6171)

Original advisory details:

It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to cause a denial of service. (CVE-2017-15132)

Update instructions

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

Ubuntu 12.04 LTS:
dovecot-core

1:2.0.19-0ubuntu2.4

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2013-6171,

CVE-2017-15132

Read More

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