First published: Wed Oct 30 2019(Updated: )
Felix Wilhelm discovered that FreeTDS incorrectly handled certain types after a protocol downgrade. A remote attacker could use this issue to cause FreeTDS to crash, resulting in a denial of service, or possibly execute arbitrary code.
Affected Software | Affected Version | How to fix |
---|---|---|
All of | ||
ubuntu/freetds-bin | <1.1.6-1ubuntu0.1 | 1.1.6-1ubuntu0.1 |
Ubuntu | =19.10 | |
All of | ||
ubuntu/libct4 | <1.1.6-1ubuntu0.1 | 1.1.6-1ubuntu0.1 |
Ubuntu | =19.10 | |
All of | ||
ubuntu/libsybdb5 | <1.1.6-1ubuntu0.1 | 1.1.6-1ubuntu0.1 |
Ubuntu | =19.10 | |
All of | ||
ubuntu/tdsodbc | <1.1.6-1ubuntu0.1 | 1.1.6-1ubuntu0.1 |
Ubuntu | =19.10 | |
All of | ||
ubuntu/freetds-bin | <1.00.104-1ubuntu0.1 | 1.00.104-1ubuntu0.1 |
Ubuntu | =19.04 | |
All of | ||
ubuntu/libct4 | <1.00.104-1ubuntu0.1 | 1.00.104-1ubuntu0.1 |
Ubuntu | =19.04 | |
All of | ||
ubuntu/libsybdb5 | <1.00.104-1ubuntu0.1 | 1.00.104-1ubuntu0.1 |
Ubuntu | =19.04 | |
All of | ||
ubuntu/tdsodbc | <1.00.104-1ubuntu0.1 | 1.00.104-1ubuntu0.1 |
Ubuntu | =19.04 | |
All of | ||
ubuntu/freetds-bin | <1.00.82-2ubuntu0.1 | 1.00.82-2ubuntu0.1 |
Ubuntu | =18.04 | |
All of | ||
ubuntu/libct4 | <1.00.82-2ubuntu0.1 | 1.00.82-2ubuntu0.1 |
Ubuntu | =18.04 | |
All of | ||
ubuntu/libsybdb5 | <1.00.82-2ubuntu0.1 | 1.00.82-2ubuntu0.1 |
Ubuntu | =18.04 | |
All of | ||
ubuntu/tdsodbc | <1.00.82-2ubuntu0.1 | 1.00.82-2ubuntu0.1 |
Ubuntu | =18.04 |
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The severity of USN-4173-1 is classified as high due to the potential for remote attackers to cause a denial of service or execute arbitrary code.
To fix USN-4173-1, upgrade FreeTDS to version 1.1.6-1ubuntu0.1 or 1.00.104-1ubuntu0.1 for affected Ubuntu releases.
USN-4173-1 affects Ubuntu versions 18.04, 19.04, and 19.10.
The impacted packages in USN-4173-1 include freetds-bin, libct4, libsybdb5, and tdsodbc.
If you cannot upgrade due to USN-4173-1, ensure that network access to the affected components is restricted and monitor for unusual activity.