CVE-2020-35525

SQLite is a C library that implements an SQL database engine. A large subset of SQL92 is supported. A complete database is stored in a single disk file. The API is designed for convenience and ease of use. Applications that link against SQLite can enjoy the power and flexibility of an SQL database without the administrative hassles of supporting a separate database server.

Security Fix(es):

• sqlite: Out of bounds access during table rename (CVE-2020-35527)

• sqlite: Null pointer derreference in src/select.c (CVE-2020-35525)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In SQlite 3.31.1, a potential null pointer derreference was found in the INTERSEC query processing.

SQLite is a C library that implements an SQL database engine. A large subset of SQL92 is supported. A complete database is stored in a single disk file. The API is designed for convenience and ease of use. Applications that link against SQLite can enjoy the power and flexibility of an SQL database without the administrative hassles of supporting a separate database server.

Security Fix(es):

• sqlite: Out of bounds access during table rename (CVE-2020-35527)
• sqlite: Null pointer derreference in src/select.c (CVE-2020-35525)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In SQlite 3.31.1, a potential null pointer derreference was found in the INTERSEC query processing.

• CVE-2021-20223: prevent fts5 tokenizer unicode61 from considering '\0' to be a token characters, even if other characters of class "Cc" are.
• CVE-2020-35525: fix a potential null pointer dereference.

• CVE-2021-20223: prevent fts5 tokenizer unicode61 from considering '\0' to be a token characters, even if other characters of class "Cc" are.
• CVE-2020-35525: fix a potential null pointer dereference.

• CVE-2020-13435: add a code that tries to prevent a recurrence of problems
• CVE-2020-35525: a potential null pointer dereference was fixed

• CVE-2020-13435: add a code that tries to prevent a recurrence of problems
• CVE-2020-35525: a potential null pointer dereference was fixed

It was discovered that SQLite incorrectly handled INTERSEC query processing. An attacker could use this issue to cause SQLite to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-35525)

It was discovered that SQLite incorrectly handled ALTER TABLE for views that have a nested FROM clause. An attacker could use this issue to cause SQLite to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue was only addressed in Ubuntu 20.04 LTS. (CVE-2020-35527)

It was discovered that SQLite incorrectly handled embedded null characters when tokenizing certain unicode strings. This issue could result in incorrect results. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-20223)

USN-5615-1 fixed several vulnerabilities in SQLite. This update provides the corresponding fix for CVE-2020-35525 for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that SQLite incorrectly handled INTERSEC query processing. An attacker could use this issue to cause SQLite to crash, resulting in a denial of service, or possibly execute arbitrary code.

USN-5615-1 fixed several vulnerabilities in SQLite. This update provides the corresponding fix for CVE-2020-35525 for Ubuntu 14.04 LTS.

Original advisory details:

It was discovered that SQLite incorrectly handled INTERSEC query processing. An attacker could use this issue to cause SQLite to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-35525)

It was discovered that SQLite incorrectly handled ALTER TABLE for views that have a nested FROM clause. An attacker could use this issue to cause SQLite to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue was only addressed in Ubuntu 20.04 LTS. (CVE-2020-35527)

It was discovered that SQLite incorrectly handled embedded null characters when tokenizing certain unicode strings. This issue could result in incorrect results. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-20223)