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OWASP ASVS 5.0 · all subjects

asvs/metadata

29 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

ASVS 5.0 Project Leads

The project leads for ASVS 5.0 are Daniel Cuthbert, Elar Lang, and Josh C Grossman.

ASVS Version History

The Application Security Verification Standard has versions ranging from ASVS 1.0 (2008) through ASVS 5.0 (2025). ASVS 4.0 was released in 2019.

ASVS 5.0 Release Date

Version 5.0.0 was released in May 2025.

ASVS License

ASVS 5.0 is released under the Creative Commons Attribution-ShareAlike 4.0 International License. The copyright holder is The OWASP Foundation (2008-2025).

ASVS 5.0 release and previous versions

ASVS was originally launched in 2008 through global community collaboration. ASVS 4.0 was released in 2019 with a minor update (v4.0.3) in 2021. Version 5.0 represents a significant milestone modernized to reflect the latest advances in software security.

ASVS 5.0 Level 1 requirements reduced from 46% to 20%

Version 5.0 aims to lower the barrier to entry by defining Level 1 primarily around first-layer defense requirements, resulting in clearer and fewer requirements at that level. In v4.0.3 there were 128 L1 requirements out of a total of 278 requirements, representing 46%. In 5.0.0 there are 70 L1 requirements out of a total of 345 requirements, representing 20%.

ASVS 5.0 mapping documents available

Mapping documents are provided to help users trace how requirements from version 4.x correspond to those in version 5.0. These mappings are not tied to release versioning and may be updated or clarified as needed.

ASVS 5.0 level indicators format change

Whereas version 4.x used tick marks for level indicators, version 5.x uses a simple number on all formats of the standard including markdown, PDF, DOCX, CSV, JSON and XML. For backwards compatibility, legacy versions of the CSV, JSON and XML outputs which still use tick marks are also generated.

ASVS 5.0 vs 4.0 requirement count and changes

Of the 286 requirements in version 4.0.3, only 11 remain unchanged, while 15 have undergone minor grammatical adjustments without altering their meaning. In total 109 requirements (38%) are no longer separate requirements in version 5.0 with 50 simply being deleted, 28 removed as duplicates and 31 merged into other requirements. Even requirements that were not substantively modified have different identifiers due to reordering or restructuring.

V17.3.2 Signaling server malformed message handling

Requirement 17.3.2 applies at Level 2. The signaling server must be able to continue processing legitimate signaling messages when encountering malformed signaling messages that could cause a denial of service condition. This could include implementing input validation, safely handling integer overflows, preventing buffer overflows, and employing other robust error-handling techniques.

V17.2.6 DTLS ClientHello Race Condition vulnerability protection

Requirement 17.2.6 applies at Level 3. The media server must not be susceptible to the "ClientHello" Race Condition vulnerability in Datagram Transport Layer Security (DTLS), which can be verified by checking if the media server is publicly known to be vulnerable or by performing the race condition test.

V17.1.1 TURN server reserved IP address filtering

Requirement 17.1.1 applies at Level 2. The Traversal Using Relays around NAT (TURN) service must only allow access to IP addresses that are not reserved for special purposes, such as internal networks, broadcast, and loopback addresses. This requirement applies to both IPv4 and IPv6 addresses.

V17.1.2 TURN server resource exhaustion protection

Requirement 17.1.2 applies at Level 3. The Traversal Using Relays around NAT (TURN) service must not be susceptible to resource exhaustion when legitimate users attempt to open a large number of ports on the TURN server.

V17.2.3 SRTP authentication checking for RTP injection prevention

Requirement 17.2.3 applies at Level 2. Secure Real-time Transport Protocol (SRTP) authentication must be checked at the media server to prevent Real-time Transport Protocol (RTP) injection attacks from leading to either a Denial of Service condition or audio or video media insertion into media streams.

V17.2.4 Media server resilience to malformed SRTP packets

Requirement 17.2.4 applies at Level 2. The media server must be able to continue processing incoming media traffic when encountering malformed Secure Real-time Transport Protocol (SRTP) packets.

V17.2.5 Media server resilience to SRTP packet floods

Requirement 17.2.5 applies at Level 3. The media server must be able to continue processing incoming media traffic during a flood of Secure Real-time Transport Protocol (SRTP) packets from legitimate users.

V17.2.7 Recording mechanisms resilience to SRTP packet floods

Requirement 17.2.7 applies at Level 3. Any audio or video recording mechanisms associated with the media server must be able to continue processing incoming media traffic during a flood of Secure Real-time Transport Protocol (SRTP) packets from legitimate users.

V17.2.8 DTLS certificate verification against SDP fingerprint

Requirement 17.2.8 applies at Level 3. The Datagram Transport Layer Security (DTLS) certificate must be checked against the Session Description Protocol (SDP) fingerprint attribute, with the media stream terminated if the check fails, to ensure the authenticity of the media stream.

V17.3.1 Signaling server rate limiting and flood resilience

Requirement 17.3.1 applies at Level 2. The signaling server must be able to continue processing legitimate incoming signaling messages during a flood attack, which should be achieved by implementing rate limiting at the signaling level.

ASVS version history: v4.0.3, v5.0.be, and v5.0

The Application Security Verification Standard exists in three primary versions: v4.0.3 (latest v4 release), v5.0.be (bleeding edge version for v5.0 development where all v4.0 structure and numbers were kept directly or as placeholders), and v5.0 (the final v5.0 release after restructuring and renumbering everything).

ASVS mapping files available for version conversions

Mapping files are available to convert between ASVS versions: mapping_v5.0.be_to_v5.0.0.yml (from v5.0.be to v5.0.0), mapping_v4.0.3_to_v5.0.0.yml (from v4.0.3 to v5.0.0), and mapping_v5.0.0_to_v4.0.3.yml (from v5.0.0 to v4.0.3).

ASVS v5.0.be transitional mapping files

Temporary mapping files exist for the v5.0.be transition phase: mapping_v4.0.3_to_v5.0.be.yml (from v4.0.3 to v5.0.be) and mapping_v5.0.be_to_v4.0.3.yml (from v5.0.be to v4.0.3).

ASVS v5.0.be archived exports for NIST and CWE mappings

Before being removed from v5.0.be, archived exports include: nist.md (v5.0.be requirement ids and mapping to NIST 800-63B identifiers) and v5.0.be_cwe_mapping.json (v5.0.be requirement ids and mapping to CWE identifiers).

NIST mapping document structure and scope

This is a mapping of ASVS 5.0 requirements to NIST 800-63-3 sections, dated 07-Nov-2024. The mapping uses a table format with ASVS requirement numbers (chapters 2 through 3) in the left column and corresponding NIST section citations in the right column.

Appendix D purpose in ASVS 5.0

Appendix D captures items that were excluded from ASVS 5.0 requirements because they were either out of scope or could not be made mandatory, despite being good security practices. The appendix is organized into three sections: recommended in-scope mechanisms, software security principles, and software security processes.

ASVS structure: 17 chapters divided into sections

ASVS is made up of approximately 350 requirements divided into 17 chapters, each further divided into sections. The chapter and section division aims to simplify choosing or filtering out chapters and sections based on what is relevant for the application.

ASVS release versioning strategy

ASVS releases follow the pattern Major.Minor.Patch. Major release (first number changes) involves full reorganization where almost everything may change including requirement numbers, requiring reevaluation for compliance (e.g., 4.0.3 to 5.0.0). Minor release (second number changes) may add or remove requirements but overall numbering stays the same, requiring reevaluation for compliance (e.g., 5.0.0 to 5.1.0). Patch release (third number changes) may remove requirements or make them less stringent, and applications compliant with previous release will comply with patch release (e.g., 5.0.0 to 5.0.1).

ASVS requirement identifier format

Each requirement has an identifier in the format <chapter>.<section>.<requirement>, where each element is a number (e.g., 1.11.3). The chapter value corresponds to the chapter from which the requirement comes. The section value corresponds to the section within that chapter. The requirement value identifies the specific requirement within the chapter and section.

ASVS requirement reference format with version

It is preferable for documents, reports, or tools to use the format v<version>-<chapter>.<section>.<requirement>, where version is the ASVS version tag (e.g., v5.0.0-1.2.5). The v preceding the version number should always be lowercase. If identifiers are used without the v<version> element, they should be assumed to refer to the latest ASVS content.

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