Libtasn1: inefficient der decoding in libtasn1 leading to potential remote dos
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 4.20.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
A flaw in libtasn1 causes inefficient handling of specific certificate data. When processing a large number of elements in a certificate, libtasn1 takes much longer than expected, which can slow down or even crash the system. This flaw allows an attacker to send a specially crafted certificate, causing a denial of service attack.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- libtasn1
fixed in 4.20.0
- libtasn1
Version range not reported
- gnutls
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- libtasn1
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- gnutls
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- libtasn1
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- gnutls
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- libtasn1
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- gnutls
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- libtasn1
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- gnutls
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- libtasn1
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- gnutls
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- libtasn1
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- libtasn1
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- libtasn1
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- libtasn1
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- discovery/discovery-server-rhel9
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- discovery/discovery-ui-rhel9
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- libtasn1
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- libtasn1
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- libtasn1
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- openshift/ose-rhel-coreos-9
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