OpenSSL: Out-of-bounds Read
CVE-2024-9143 is a high-severity out-of-bounds read vulnerability in OpenSSL, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 3.3.3, 3.2.4, 3.1.8 as the first without the flaw, so updating OpenSSL to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 12.5% chance of exploitation within 30 days, which is in the top 3.71% of all scored CVEs.
EPSS places it among the vulnerabilities most likely to be exploited soon.
What to do
- Update OpenSSL to 3.3.3 or 3.2.4 or 3.1.8 or 3.0.16, whichever matches your release line, or a later version.
- Update SIDIS Prime to V4.0.700 or a later version.
- Update SIMATIC S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5 or a later version.
- Read the advisory on openssl-library.org for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| OpenSSL | OpenSSL | 3.3.0 up to, but not including, 3.3.3; 3.2.0 up to, but not including, 3.2.4; 3.1.0 up to, but not including, 3.1.8; 3.0.0 up to, but not including, 3.0.16; 1.1.1 up to, but not including, 1.1.1zb; 1.0.2 up to, but not including, 1.0.2zl | 3.3.3, 3.2.4, 3.1.8, 3.0.16, 1.1.1zb, 1.0.2zl |
| Siemens | SIDIS Prime | before V4.0.700 | V4.0.700 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.0 up to, but not including, V3.1.5 | V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.0 up to, but not including, V3.1.5 | V3.1.5 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | before V1.1.1 | V1.1.1 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.0 up to, but not including, V3.1.5 | V3.1.5 |
| Debian | Debian Linux | 11.0 | Not stated |
| NetApp | Active Iq Unified Manager | Not specified in the record | Not stated |
| NetApp | Ontap Select Deploy Administration Utility | Not specified in the record | Not stated |
| NetApp | Ontap Tools | Not specified in the record | Not stated |
| NetApp | Snapmanager | Not specified in the record | Not stated |
| NetApp | Brocade Fabric Operating System | Not specified in the record | Not stated |
| NetApp | Bootstrap OS | Not specified in the record | Not stated |
| NetApp | A250 Firmware | Not specified in the record | Not stated |
| NetApp | 500f Firmware | Not specified in the record | Not stated |
| NetApp | C250 Firmware | Not specified in the record | Not stated |
| NetApp | H300s Firmware | Not specified in the record | Not stated |
| NetApp | H500s Firmware | Not specified in the record | Not stated |
| NetApp | H700s Firmware | Not specified in the record | Not stated |
| NetApp | H410s Firmware | Not specified in the record | Not stated |
| NetApp | H410c Firmware | Not specified in the record | Not stated |
| NetApp | H610c Firmware | Not specified in the record | Not stated |
| NetApp | H610s Firmware | Not specified in the record | Not stated |
| NetApp | H615c Firmware | Not specified in the record | Not stated |
| Siemens | Simatic S7-1500 Tm Mfp Firmware | before 1.1.1 | 1.1.1 |
Version data comes from the organisation that assigned the CVE; 8 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).
Official description
Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial can lead to out-of-bounds memory reads or writes. Impact summary: Out of bound memory writes can lead to an application crash or even a possibility of a remote code execution, however, in all the protocols involving Elliptic Curve Cryptography that we're aware of, either only "named curves" are supported, or, if explicit curve parameters are supported, they specify an X9.62 encoding of binary (GF(2^m)) curves that can't represent problematic input values. Thus the likelihood of existence of a vulnerable application is low. In particular, the X9.62 encoding is used for ECC keys in X.509 certificates, so problematic inputs cannot occur in the context of processing X.509 certificates. Any problematic use-cases would have to be using an "exotic" curve encoding. The affected APIs include: EC_GROUP_new_curve_GF2m(), EC_GROUP_new_from_params(), and various supporting BN_GF2m_*() functions. Applications working with "exotic" explicit binary (GF(2^m)) curve parameters, that make it possible to represent invalid field polynomials with a zero constant term, via the above or similar APIs, may terminate abruptly as a result of reading or writing outside of array bounds. Remote code execution cannot easily be ruled out. The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- github.com/openssl/openssl/commit/72ae83ad214d2eef262461365a1975707f862712
- github.com/openssl/openssl/commit/bc7e04d7c8d509fb78fc0e285aa948fb0da04700
- github.com/openssl/openssl/commit/c0d3e4d32d2805f49bec30547f225bc4d092e1f4
- github.com/openssl/openssl/commit/fdf6723362ca51bd883295efe206cb5b1cfa5154
- github.openssl.org/openssl/extended-releases/commit/8efc0cbaa8ebba8e116f7b81a876a4123594d86aPermissions Required
- github.openssl.org/openssl/extended-releases/commit/9d576994cec2b7aa37a91740ea7e680810957e41Permissions Required
Third-party and government advisories
- openwall.com/lists/oss-security/2024/10/16/1Mailing List, Third Party Advisory
- openwall.com/lists/oss-security/2024/10/23/1Mailing List, Third Party Advisory
- openwall.com/lists/oss-security/2024/10/24/1Mailing List, Third Party Advisory
- lists.debian.org/debian-lts-announce/2024/10/msg00033.htmlMailing List, Third Party Advisory
- lists.debian.org/debian-lts-announce/2024/11/msg00000.htmlMailing List, Third Party Advisory
- security.netapp.com/advisory/ntap-20241101-0001/Third Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-265688.htmlThird Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-277137.htmlThird Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-398330.htmlThird Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-769027.htmlThird Party Advisory
Other vulnerabilities in OpenSSL
- 7.5 High severity
- 7.5 High severity
- 8.2 High severity
- 7.5 High severity
- 7.5 High severity
- 9.1 Critical severity
Recent Out-of-bounds Read vulnerabilities
- 8.5 High severity
- 8.1 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.5 High severity
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