Integer Overflow in openssl-src
Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2021-23841US | medium5.9OT erhöht | Exploit | ||
The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- http://seclists.org/fulldisclosure/2021/May/67WEB
- http://seclists.org/fulldisclosure/2021/May/68WEB
- http://seclists.org/fulldisclosure/2021/May/70WEB
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdfWEB
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=122a19ab48091c657f7cb1fb3af9fc07bd557bbfWEB
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a51b9e1d0cf0bf8515f7201b68fb0a3482b3dc1WEB
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807WEB
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9b1129239f3ebb1d1c98ce9ed41d5c9476c47cb2WEB
Advisories wie diese benennen die exponierten Produkte, die Angreifer auf Ihrer Angriffsfläche ins Visier nehmen. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.
Kostenloser Scan