CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.7 | $0-$5k | 0.00 |
A vulnerability was found in PHP up to 7.3.31/7.4.25/8.0.12 (Programming Language Software). It has been classified as critical. This affects an unknown function of the component FPM SAPI. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was published 10/25/2021 as 81026. The advisory is shared at bugs.php.net. This vulnerability is uniquely identified as CVE-2021-21703 since 01/04/2021. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/29/2022).
Applying the patch cb2021e5f69da5e2868130a05bb53db0f9f89e4b is able to eliminate this problem. The bugfix is ready for download at github.com.
Product
Type
Name
Version
- 7.3.0
- 7.3.1
- 7.3.2
- 7.3.3
- 7.3.4
- 7.3.5
- 7.3.6
- 7.3.7
- 7.3.8
- 7.3.9
- 7.3.10
- 7.3.11
- 7.3.12
- 7.3.13
- 7.3.14
- 7.3.15
- 7.3.16
- 7.3.17
- 7.3.18
- 7.3.19
- 7.3.20
- 7.3.21
- 7.3.22
- 7.3.23
- 7.3.24
- 7.3.25
- 7.3.26
- 7.3.27
- 7.3.28
- 7.3.29
- 7.3.30
- 7.3.31
- 7.4.0
- 7.4.1
- 7.4.2
- 7.4.3
- 7.4.4
- 7.4.5
- 7.4.6
- 7.4.7
- 7.4.8
- 7.4.9
- 7.4.10
- 7.4.11
- 7.4.12
- 7.4.13
- 7.4.14
- 7.4.15
- 7.4.16
- 7.4.17
- 7.4.18
- 7.4.19
- 7.4.20
- 7.4.21
- 7.4.22
- 7.4.23
- 7.4.24
- 7.4.25
- 8.0.0
- 8.0.1
- 8.0.2
- 8.0.3
- 8.0.4
- 8.0.5
- 8.0.6
- 8.0.7
- 8.0.8
- 8.0.9
- 8.0.10
- 8.0.11
- 8.0.12
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.0VulDB Meta Temp Score: 7.7
VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
CNA Base Score: 7.8
CNA Vector (PHP Group): 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Out-of-bounds writeCWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Patch: cb2021e5f69da5e2868130a05bb53db0f9f89e4b
Timeline
01/04/2021 🔍10/25/2021 🔍
10/25/2021 🔍
03/29/2022 🔍
Sources
Product: php.orgAdvisory: 81026
Status: Confirmed
CVE: CVE-2021-21703 (🔍)
Entry
Created: 10/25/2021 13:00Updated: 03/29/2022 12:28
Replaces Duplicates: 🔍
Changes: 10/25/2021 13:00 (51), 10/30/2021 01:22 (1), 03/29/2022 12:28 (1)
Complete: 🔍
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