Symantec Endpoint Encryption / Symantec Encryption Desktop DoS
SUMMARY
Symantec has released an update to address four issues in the Symantec Endpoint Encryption / Symantec Encryption Desktop products.
AFFECTED PRODUCTS
|
Symantec Endpoint Encryption (SEE) |
||
CVE |
Affected Version(s) |
Remediation |
|
CVE-2017-13675 CVE-2017-13683 |
Prior to 11.1.3HF3 |
Upgrade to 11.1.3HF3 |
|
Symantec Encryption Desktop (SED) |
||
CVE |
Affected Version(s) |
Remediation |
|
CVE-2017-13679 CVE-2017-13682 |
Prior to 10.4.1 MP2HF1 |
Upgrade to 10.4.1 MP2HF1 |
ISSUES
|
CVE-2017-13675 |
|
|
Severity/CVSSv3: |
Medium / 4.2 AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H |
|
References: Impact: |
Securityfocus: BID 101089 / NVD: CVE-2017-13675 Denial of service |
|
Description: |
A denial of service (DoS) attack is a type of attack whereby the perpetrator attempts to make a particular machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a specific host within a network. DoS attacks can occur when a system becomes flooded with specific network requests or subversive operations that can cause the resourced system to become unresponsive. |
|
CVE-2017-13679 |
|
|
Severity/CVSSv3: |
Medium / 4.2 AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H |
|
References: Impact: |
Securityfocus: BID 101090 / NVD: CVE-2017-13679 Denial of service |
|
Description: |
A denial of service (DoS) attack is a type of attack whereby the perpetrator attempts to make a particular machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a specific host within a network. DoS attacks can occur when a system becomes flooded with specific network requests or subversive operations that can cause the resourced system to become unresponsive. |
|
CVE-2017-13682 |
|
|
Severity/CVSSv3: |
Medium / 5.7 AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H |
|
References: Impact: |
Securityfocus: BID 101497 / NVD: CVE-2017-13682 Kernel memory leak |
|
Description: |
A kernel memory leak is a type of resource leak that can occur when a computer program incorrectly manages memory allocations in such a way that memory which is no longer needed is not released. In object-oriented programming, a memory leak may happen when an object is stored in memory but cannot be accessed by the running code. |
|
CVE-2017-13683 |
|
|
Severity/CVSSv3: |
Medium / 5.7 AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H |
|
References: Impact: |
Securityfocus: BID 101498 / NVD: CVE-2017-13683 Kernel memory leak |
|
Description: |
A kernel memory leak is a type of resource leak that can occur when a computer program incorrectly manages memory allocations in such a way that memory which is no longer needed is not released. In object-oriented programming, a memory leak may happen when an object is stored in memory but cannot be accessed by the running code. |
MITIGATION
This issue was validated by the product team engineers. A Symantec Endpoint Encryption / Symantec Encryption Desktop set of updates, versions SEE 11.1.3HF3 and SED 10.4.1 MP2HF1, have been released which address the aforementioned vulnerabilities. Note that the latest releases and patches for Symantec Endpoint Encryption / Symantec Encryption Desktop are available to customers through normal support channels.
Additional note: All customers should apply the new patch, released October 23 (SEE 11.1.3HF3). This includes both customers that have already applied the previous patch (SEE 11.1.3HF2) as well as those that have not. All fixes are cumulative.
At this time, Symantec is not aware of any exploitations or adverse customer impact from these issues.
Best Practices
Symantec recommends the following measures to reduce risk of attack:
- Restrict access to administrative or management systems to authorized privileged users.
- Restrict remote access to trusted/authorized systems only.
- Run under the principle of least privilege, where possible, to limit the impact of potential exploit.
- Keep all operating systems and applications current with vendor patches.
- Follow a multi-layered approach to security. At a minimum, run both firewall and anti-malware applications to provide multiple points of detection and protection for both inbound and outbound threats.
- Deploy network and host-based intrusion detection systems to monitor network traffic for signs of anomalous or suspicious activity. This may aid in the detection of attacks or malicious activity related to the exploitation of latent vulnerabilities.
ACKNOWLEDGEMENTS
- Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13675)
- Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13679)
- Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13682)
- Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13683)
REVISION
- Advisory amended on October 23rd, 2017