Felix Dörre

**Name of the Vulnerable Software and Affected Versions** systemd version 253 **Description** An issue was discovered where an attacker can modify the contents of past events in a sealed log file and then adjust the file such that checking the integrity shows no error, despite modifications. **Recommendations** For systemd version 253, at the moment, there is no information about a newer version that contains a fix for this issue.

**Name of the Vulnerable Software and Affected Versions** Java SE versions 6u201, 7u191, 8u182 and 11 Java SE Embedded version 8u181 JRockit version R28.3.19 **Description** The issue is related to inadequate access control in the JSSE component of Oracle Java SE, allowing an unauthenticated attacker with network access via SSL/TLS to compromise Java SE, Java SE Embedded, and JRockit. This can result in unauthorized update, insert, or delete access to some data, as well as unauthorized read access to a subset of data and the ability to cause a partial denial of service. The vulnerability applies to Java deployments that load and run untrusted code and rely on the Java sandbox for security. It can also be exploited through APIs in the specified component. **Recommendations** For Java SE versions 6u201, 7u191, 8u182 and 11, update to a version that includes the fix for this issue. For Java SE Embedded version 8u181, update to a version that includes the fix for this issue. For JRockit version R28.3.19, update to a version that includes the fix for this issue. As a temporary workaround, consider restricting access to the JSSE component until a patch is available. Avoid using APIs in the JSSE component that supply data to untrusted code until the issue is resolved.

**Name of the Vulnerable Software and Affected Versions** Libgcrypt versions prior to 1.5.6 Libgcrypt versions 1.6.x prior to 1.6.6 Libgcrypt versions 1.7.x prior to 1.7.3 GnuPG versions prior to 1.4.21 **Description** The issue is related to an error in the pseudorandom number generator of the Libgcrypt cryptography library, which leads to the generation of 160 bits of random number from the standard random number generator. This allows a remote attacker to predict the output. The mixing functions in the random number generator make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits. **Recommendations** For Libgcrypt versions prior to 1.5.6, update to version 1.5.6 or later. For Libgcrypt versions 1.6.x prior to 1.6.6, update to version 1.6.6 or later. For Libgcrypt versions 1.7.x prior to 1.7.3, update to version 1.7.3 or later. For GnuPG versions prior to 1.4.21, update to version 1.4.21 or later.