A flaw was found in HTTP/2. Using SETTINGS frames and queuing of SETTINGS ACK frames, a flood could occur resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability.

A flaw was found in HTTP/2. An attacker, using PRIORITY frames to flood the system, could cause excessive CPU usage and starvation of other clients. The largest threat from this vulnerability is to system availability.

A flaw was found in HTTP/2. An attacker, sending a stream of header with a 0-length header name and a 0-length header value, could cause some implementations to allocate memory for these headers and keep the allocations alive until the session dies. The can consume excess memory, potentially leading to a denial of service. The highest threat from this vulnerability is to system availability.

A vulnerability was found in http/2 where an attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both, potentially leading to a denial of service.

A heap-based buffer overflow was found in the way sudo parses command line arguments.

As per the researcher this vulnerability:

- is exploitable by any local user (normal users and system users, sudoers and non-sudoers), without authentication (i.e., the attacker does not need to know the user's password);

- was introduced in July 2011 (commit 8255ed69), and affects all legacy versions from 1.8.2 to 1.8.31p2 and all stable versions from 1.9.0 to 1.9.5p1, in their default configuration.

This could lead to privilege escalation.

A vulnerability in Active Backup for Business allows unauthorized remote attackers to read arbitrary files.

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in Archiving Pull functionality in Synology Surveillance Station before 9.2.2-11575 and 9.2.2-9575 allows remote authenticated users with administrator privileges to limited file write via unspecified vectors.

Missing authorization vulnerability in AddOns functionality in Synology Surveillance Station before 9.2.2-11575 and 9.2.2-9575 allows remote authenticated users with administrator privileges to obtain sensitive information via unspecified vectors.

Cleartext transmission of sensitive information vulnerability in Export Key functionality in Synology Surveillance Station before 9.2.2-11575 and 9.2.2-9575 allows remote authenticated users with administrator privileges to obtain sensitive information via unspecified vectors.

Improper preservation of permissions vulnerability in Archiving Push functionality in Synology Surveillance Station before 9.2.2-11575 and 9.2.2-9575 allows remote authenticated users with administrator privileges to limited file write via unspecified vectors.

Insufficiently protected credentials vulnerability in IPSpeaker component in Synology Surveillance Station before 9.2.2-11575 and 9.2.2-9575 allows remote authenticated users with administrator privileges to obtain sensitive information via unspecified vectors.

Incorrect authorization vulnerability in IO Module functionality in Synology Surveillance Station before 9.2.2-11575 and 9.2.2-9575 allows remote authenticated users with administrator privileges to limited file write via unspecified vectors.

A flaw was found in HTTP/2. Using frames with an empty payload, a flood could occur that results in excessive CPU usage and starvation of other clients. The highest threat from this vulnerability is to system availability.

A flaw was found in HTTP/2. Using HEADER frames with invalid HTTP headers and queuing of response RSTSTREAM frames, an attacker could cause a flood resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability.

A flaw was found in HTTP/2. An attacker can request a large amount of data by manipulating window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this queue can consume excess CPU, memory, or both, leading to a denial of service. The highest threat from this vulnerability is to system availability.

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in agent-related functionality in Synology Active Backup for Business before 2.7.1-13234, 2.7.1-23234 and 2.7.1-3234 allows remote authenticated users with administrator privileges to delete arbitrary files via unspecified vectors.

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in encrypted share umount functionality in Synology Active Backup for Business before 2.7.1-13234, 2.7.1-23234 and 2.7.1-3234 allows remote authenticated users to write specific files via unspecified vectors.

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in share file list functionality in Synology Active Backup for Business before 2.7.1-13234, 2.7.1-23234 and 2.7.1-3234 allows remote authenticated users with administrator privileges to read specific files containing non-sensitive information via unspecified vectors.

Netatalk before 3.1.12 is vulnerable to an out of bounds write in dsiopensess.c. This is due to lack of bounds checking on attacker controlled data. A remote unauthenticated attacker can leverage this vulnerability to achieve arbitrary code execution.

Off-by-one error vulnerability in the transmission component in Synology Replication Service before 1.0.12-0066, 1.2.2-0353 and 1.3.0-0423 and Synology Unified Controller (DSMUC) before 3.1.4-23079 allows remote attackers to execute arbitrary code, potentially leading to a broader impact across the system via unspecified vectors.

Improper validation of array index vulnerability in UserPrivilege.Enum webapi component in Synology Surveillance Station before 9.2.0-9289 and 9.2.0-11289 allows remote authenticated users to obtain non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Missing authorization vulnerability in System webapi component in Synology Surveillance Station before 9.2.0-9289 and 9.2.0-11289 allows remote authenticated users to obtain non-sensitive information, write sensitive configurations in DSM, and reboot or shutdown NAS via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in Layout.LayoutSave webapi component in Synology Surveillance Station before 9.2.0-9289 and 9.2.0-11289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in SnapShot.CountByCategory webapi component in Synology Surveillance Station before 9.2.0-9289 and 9.2.0-11289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in Alert.Enum webapi component in Synology Surveillance Station before 9.2.0-11289 and 9.2.0-9289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in Emap.Delete webapi component in Synology Surveillance Station before 9.2.0-9289 and 9.2.0-11289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in Group.Save webapi component in Synology Surveillance Station before 9.2.0-11289 and 9.2.0-9289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in IOModule.EnumLog webapi component in Synology Surveillance Station before 9.2.0-11289 and 9.2.0-9289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in AudioPattern.Delete webapi component in Synology Surveillance Station before 9.2.0-9289 and 9.2.0-11289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in ActionRule.Delete webapi component in Synology Surveillance Station before 9.2.0-11289 and 9.2.0-9289 allows remote authenticated users to read database containing non-sensitive information and conduct limited denial-of-service attacks via unspecified vectors.