CVE-2021-26713
Published Feb 19, 2021
Last updated 4 years ago
Overview
- Description
- A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4
- Impact score
- 2.9
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:N/I:N/A:P
Weaknesses
- nvd@nist.gov
- CWE-787
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7382B641-0396-456F-BF33-3F6412E35F2D",
"versionEndExcluding": "16.16.1",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C5BA8606-ADA9-4841-A7E2-A9165138849A",
"versionEndExcluding": "17.9.2",
"versionStartIncluding": "17.0.0"
},
{
"criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CE8661F7-03A5-4850-BEF7-E306AECE3037",
"versionEndExcluding": "18.2.1",
"versionStartIncluding": "18.0.0"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "81C3E390-8B99-4EB8-82DD-02893611209A"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "17DB2297-1908-4F87-8046-2BAA74569D71"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CEA2CC40-C2F6-4828-82F0-1B50D3E61F77"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "32F19F43-C1E8-4B6C-9356-AF355B7320BD"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "21D1FA32-B441-485F-8AE9-F3A394626909"
},
{
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"vulnerable": true,
"matchCriteriaId": "F7795CCF-B160-4B4F-9529-1192C11D7FDB"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0C5E5D0D-9EB3-40FD-8B7E-E93A95D07AB1"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C7DFDA30-DD61-4BBC-AFE4-448BF2A4F303"
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{
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"vulnerable": true,
"matchCriteriaId": "142F1F89-49AC-4A0B-A273-61F697063A5A"
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{
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"vulnerable": true,
"matchCriteriaId": "FBB98E65-B2D0-49A4-8BF3-12155E3E13C9"
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{
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"vulnerable": true,
"matchCriteriaId": "769C854C-03CD-40A9-B39B-C0CDCA8252EA"
},
{
"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6D86AD6E-4E07-48B0-88D8-E18F277FFE6A"
}
],
"operator": "OR"
}
]
}
]