medium
6.5
Advisory Published
CVE Published
CVE Published
Advisory Published
Updated

CVE-2023-5388

First published: Thu Oct 12 2023(Updated: )

It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the leak happens before any padding operations, it affects all padding modes: PKCS#1 v1.5, OAEP, and RSASVP. Both API level calls and TLS server operation are affected. References: <a href="https://people.redhat.com/~hkario/marvin/">https://people.redhat.com/~hkario/marvin/</a>

Credit: security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
redhat/firefox<115.9
115.9
redhat/thunderbird<115.9
115.9
IBM Cognos Analytics<=12.0.0-12.0.3
IBM Cognos Analytics<=11.2.0-11.2.4 FP4
F5 F5OS=1.7.0
F5 Traffix Systems Signaling Delivery Controller=5.2.0=5.1.0
Thunderbird<115.9
115.9
Firefox<124
124
Firefox ESR<115.9
115.9
debian/firefox
135.0.1-1
debian/firefox-esr
115.14.0esr-1~deb11u1
128.7.0esr-1~deb11u1
128.5.0esr-1~deb12u1
128.7.0esr-1~deb12u1
128.7.0esr-1
debian/nss<=2:3.61-1+deb11u3<=2:3.61-1+deb11u4<=2:3.87.1-1+deb12u1
2:3.108-1
debian/thunderbird
1:115.12.0-1~deb11u1
1:128.7.0esr-1~deb11u1
1:128.5.0esr-1~deb12u1
1:128.7.0esr-1~deb12u1
1:128.7.0esr-1

Remedy

https://git.rockylinux.org/staging/rpms/nss/-/commit/1f7f7523b61a2ada2f461548c4160fbbf979c5dd

Remedy

https://hg.mozilla.org/projects/nss/rev/196716d8377ab427e326f20bff2d026e90ac69e2

Remedy

https://hg.mozilla.org/projects/nss/rev/b090a1e5dcdfc5772671063cfe9ebeadabd29ad3

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2023-5388?

    CVE-2023-5388 has a critical severity rating due to its potential to allow information leakage that may lead to further attacks.

  • How do I fix CVE-2023-5388?

    To fix CVE-2023-5388, users should update affected software to the latest patched versions, which include Mozilla Firefox, Firefox ESR, Thunderbird, and specific IBM Cognos Analytics versions.

  • What types of software are affected by CVE-2023-5388?

    CVE-2023-5388 affects Mozilla Firefox, Firefox ESR, Thunderbird, and specific versions of IBM Cognos Analytics as well as certain configurations of F5 products.

  • What attack methods are enabled by CVE-2023-5388?

    CVE-2023-5388 enables attackers to potentially exploit RSA decryption operations using techniques similar to Bleichenbacher or Manger attacks.

  • When was CVE-2023-5388 disclosed?

    CVE-2023-5388 was disclosed in 2024, following the identification of the vulnerability in the NSS numerical library.

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