CVE-2023-5388: Medium severity F5 F5OS-A vulnerability

Published 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: https://people.redhat.com/~hkario/marvin/

Other sources

NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data.

— Mozilla

Affected Software

26 affected componentsFixes available
F5 F5OS-A=1.7.0
F5 Traffix SDC=5.2.0, =5.1.0
Mozilla Thunderbird<115.9
115.9
Mozilla Firefox<124
124
Mozilla Firefox ESR<115.9
115.9
IBM R10.0<=10.1.3.0 10.0.245.0
IBM R9.4<=89.42.18.0 89.41.25.0 89.40.83.0
IBM R9.3<=89.33.52.0 89.33.45.0
Mozilla Firefox<115.9.0
Mozilla Firefox<124.0
Mozilla Thunderbird<115.9.0
Debian Debian Linux=10.0
redhat/firefox<115.9
115.9
redhat/thunderbird<115.9
115.9
alpine/firefox-esr<115.9.0-r0
115.9.0-r0
alpine/firefox-esr<115.9.0-r0
115.9.0-r0
alpine/nss<3.98-r0
3.98-r0
alpine/nss<3.98-r0
3.98-r0
alpine/nss<3.98-r0
3.98-r0
alpine/nss<3.98-r0
3.98-r0
alpine/nss<3.98-r0
3.98-r0
alpine/nss<3.98-r0
3.98-r0
debian/firefox
160.0-1
debian/firefox-esr
140.12.0esr-1~deb12u1153.7.0esr-1~deb12u1140.15.0esr-1~deb13u1153.7.0esr-1~deb13u1153.5.1esr-1153.7.0esr-1
debian/nss<=2:3.87.1-1+deb12u2, <=2:3.87.1-1+deb12u4
2:3.110-1+deb13u42:3.110-1+deb13u52:3.132-1
debian/thunderbird
1:140.12.0esr-1~deb12u11:153.7.0esr-1~deb12u11:140.12.0esr-1~deb13u11:153.7.0esr-1~deb13u11:153.5.0esr-11:153.7.0esr-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 115.9
  2. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 124
  3. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.9
  4. Upgrade

    Upgrade redhat/firefox to a version that resolves this vulnerability.

    Fixed in 115.9
  5. Upgrade

    Upgrade redhat/thunderbird to a version that resolves this vulnerability.

    Fixed in 115.9
  6. Upgrade

    Upgrade alpine/firefox-esr to a version that resolves this vulnerability.

    Fixed in 115.9.0-r0
  7. Upgrade

    Upgrade alpine/nss to a version that resolves this vulnerability.

    Fixed in 3.98-r0
  8. Upgrade

    Upgrade debian/firefox to a version that resolves this vulnerability.

    Fixed in 160.0-1
  9. Upgrade

    Upgrade debian/firefox-esr to a version that resolves this vulnerability.

    Fixed in 140.12.0esr-1~deb12u1Fixed in 153.7.0esr-1~deb12u1Fixed in 140.15.0esr-1~deb13u1Fixed in 153.7.0esr-1~deb13u1Fixed in 153.5.1esr-1Fixed in 153.7.0esr-1
  10. Upgrade

    Upgrade debian/nss to a version that resolves this vulnerability.

    Fixed in 2:3.110-1+deb13u4Fixed in 2:3.110-1+deb13u5Fixed in 2:3.132-1
  11. Upgrade

    Upgrade debian/thunderbird to a version that resolves this vulnerability.

    Fixed in 1:140.12.0esr-1~deb12u1Fixed in 1:153.7.0esr-1~deb12u1Fixed in 1:140.12.0esr-1~deb13u1Fixed in 1:153.7.0esr-1~deb13u1Fixed in 1:153.5.0esr-1Fixed in 1:153.7.0esr-1

Event History

Oct 12, 2023
Data Sourced
via Red Hat·11:32 AM
DescriptionSeverityAffected Software
Mar 19, 2024
CVE Published
via Mozilla·12:00 AM
CVE Published
via MITRE·12:02 PM
Data Sourced
via MITRE·12:02 PM
DescriptionWeakness
Data Sourced
via NVD·12:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·12:15 PM
DescriptionSeverityAffected Software
May 28, 2024
Advisory Published
via F5·07:47 PM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

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.

2

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.

3

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.

4

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.

5

When was CVE-2023-5388 disclosed?

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

Company

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