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    CVE-2021-31878

    An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk has sent a BYE request.

    Published:Jul 27, 2021
    Last Modified:Nov 21, 2024
    EPS:Jul 27, 2021
    EPSS Score:0.00401
    CVSS Score:6.5

    Affected Products

    Vendor
    Digium
    Product
    Asterisk

    Exploits

    https://issues.asterisk.org/jira/browse/ASTERISK-29381https://issues.asterisk.org/jira/browse/ASTERISK-29381

    Common Weakness Enumeration

    CWE-617 Reachable Assertion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2021-46837 (CVSS 6.5) — res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certifi…
    CVE-2022-26498 (CVSS 7.5) — An issue was discovered in Asterisk through 19.x. When using STIR/SHAKEN, it is possible to download files tha…
    CVE-2022-26651 (CVSS 9.8) — An issue was discovered in Asterisk through 19.x and Certified Asterisk through 16.8-cert13. The func_odbc mod…
    CVE-2022-26499 (CVSS 9.1) — An SSRF issue was discovered in Asterisk through 19.x. When using STIR/SHAKEN, it's possible to send arbitrary…
    CVE-2021-32558 (CVSS 7.5) — An issue was discovered in Sangoma Asterisk 13.x before 13.38.3, 16.x before 16.19.1, 17.x before 17.9.4, and …
    CVE-2021-26713 (CVSS 6.5) — A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, an…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High