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Vulnerability details: VCID-pa5c-7eew-aaas
Vulnerability ID VCID-pa5c-7eew-aaas
Aliases CVE-2021-21375
Summary PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one causing negotiation failure, a crash will occur. This results in a denial of service.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
System Score Found at
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00210 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00506 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00506 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00506 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.00963 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.02312 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
epss 0.03041 https://api.first.org/data/v1/epss?cve=CVE-2021-21375
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-21375
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-21375
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-21375
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21375
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21375
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21375
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Exploit Prediction Scoring System (EPSS)
Percentile 0.59405
EPSS Score 0.00210
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.