Vulnerability Details CVE-2021-28902
In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 30.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
Products affected by CVE-2021-28902
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cpe:2.3:a:cesnet:libyang:0.11
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cpe:2.3:a:cesnet:libyang:0.12
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cpe:2.3:a:cesnet:libyang:0.13
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cpe:2.3:a:cesnet:libyang:0.14
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cpe:2.3:a:cesnet:libyang:0.15
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cpe:2.3:a:cesnet:libyang:0.16
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cpe:2.3:a:cesnet:libyang:1.0
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cpe:2.3:a:cesnet:libyang:1.0.130
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cpe:2.3:a:cesnet:libyang:1.0.167
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cpe:2.3:a:cesnet:libyang:1.0.176
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cpe:2.3:a:cesnet:libyang:1.0.184
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cpe:2.3:a:cesnet:libyang:1.0.215
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cpe:2.3:a:cesnet:libyang:1.0.225