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Amazon Linux 2023 : cargo, clippy, rust (ALAS2023-2026-2065)
medium Nessus Plugin ID 337244
Synopsis
The remote Amazon Linux 2023 host is missing a security update.Description
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2065 advisory.rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.50 until 0.10.80, CipherCtxRef::cipher_update_inplace in openssl/src/cipher_ctx.rs incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers EVP_aes_{128,192,256}_wrap_pad. For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This issue is fixed in version 0.10.80.
(CVE-2026-45784)
RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. From 0.1.1 until 0.5.4, the aarch64 implementations of Cmov and CmovEq in cmov/src/backends/aarch64.rs assume high bits are zero- extended when loading values smaller than a register, so set high bits such as [8..] in a Cmov selector or [16..] of self or other in the u16 and i16 CmovEq implementations can cause left.cmovz(&right, condition) to produce incorrect output. This issue is fixed in version 0.5.4. (CVE-2026-50185)
libgit2 Inverted IP SubjectAltName Comparison in OpenSSL Backend ( vuln_1_1_1 ) (CVE-2026-53583)
libgit2 Submodule path traversal (CVE-2026-53584)
Unbounded Memory Allocation via Delta Object Result-Size Header (CVE-2026-53585)
libgit2's builtin HTTP transport follows offsite redirects for the initial smart HTTP request by default.
If the redirected server then returns 401 Unauthorized, libgit2 asks the application credential callback for credentials using the original remote URL, not the redirected URL. The returned credential is then attached to the next request to the redirected host as an Authorization header. (CVE-2026-53586)
libgit2 version 1.9.4 and below is vulnerable to a heap out-of-bounds read in set_data() in src/libgit2/transports/smart_pkt.c.
The vulnerable code uses a fixed-size strncmp (smart_pkt.c:239) against the unvalidated capability buffer of a smart-protocol pkt-line. When the bytes following the pkt-line in the contiguous receive buffer happen to continue with ct-format=, the comparison spuriously matches, advancing format_str past the pkt-line boundary. The following memchr(format_str, ' ', len - (format_str - line)) (smart_pkt.c:246) then underflows its size_t size argument to ~SIZE_MAX and walks the heap looking for a space byte. An unauthenticated remote attacker who controls (or man-in-the-middles) a Git server reached over HTTP/HTTPS/SSH/git:// can trigger this on the FIRST ref-pkt of the refs advertisement, before any capability negotiation has taken place. The OOB walk causes a process crash (SIGSEGV) when memchr enters an unmapped page, and -- on heap layouts where memchr finds a stray space byte before crashing -- can additionally drive the git_error_set(...'%.*s', format_len, format_str) formatter to copy a large window of heap memory into the error string. (CVE-2026-53587)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'dnf update rust --releasever 2023.12.20260817' or or 'dnf update --advisory ALAS2023-2026-2065 --releasever 2023.12.20260817' to update your system.See Also
https://alas.aws.amazon.com//AL2023/ALAS2023-2026-2065.html
https://alas.aws.amazon.com/faqs.html
https://explore.alas.aws.amazon.com/CVE-2026-45784.html
https://explore.alas.aws.amazon.com/CVE-2026-50185.html
https://explore.alas.aws.amazon.com/CVE-2026-53583.html
https://explore.alas.aws.amazon.com/CVE-2026-53584.html
https://explore.alas.aws.amazon.com/CVE-2026-53585.html
Plugin Details
Severity: Medium
ID: 337244
File Name: al2023_ALAS2023-2026-2065.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 8/18/2026
Updated: 8/18/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.3
Percentile: 53.63
CVSS v2
Risk Factor: Medium
Base Score: 6.2
Temporal Score: 4.6
Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:C
CVSS Score Source: CVE-2026-45784
CVSS v3
Risk Factor: High
Base Score: 7.1
Temporal Score: 6.2
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 5.1
Threat Score: 1.2
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:cargo-debuginfo, p-cpe:/a:amazon:linux:cargo, p-cpe:/a:amazon:linux:clippy-debuginfo, p-cpe:/a:amazon:linux:clippy, p-cpe:/a:amazon:linux:rust-analyzer-debuginfo, p-cpe:/a:amazon:linux:rust-analyzer, p-cpe:/a:amazon:linux:rust-debugger-common, p-cpe:/a:amazon:linux:rust-debuginfo, p-cpe:/a:amazon:linux:rust-debugsource, p-cpe:/a:amazon:linux:rust-doc, p-cpe:/a:amazon:linux:rust-gdb, p-cpe:/a:amazon:linux:rust-lldb, p-cpe:/a:amazon:linux:rust-src, p-cpe:/a:amazon:linux:rust-std-static-wasm32-unknown-unknown, p-cpe:/a:amazon:linux:rust-std-static-wasm32-wasip1, p-cpe:/a:amazon:linux:rust-std-static, p-cpe:/a:amazon:linux:rust-toolset-srpm-macros, p-cpe:/a:amazon:linux:rust-toolset, p-cpe:/a:amazon:linux:rust, p-cpe:/a:amazon:linux:rustfmt-debuginfo, p-cpe:/a:amazon:linux:rustfmt
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 8/17/2026
Vulnerability Publication Date: 5/19/2026
Reference Information
CVE: CVE-2026-45784, CVE-2026-50185, CVE-2026-53583, CVE-2026-53584, CVE-2026-53585, CVE-2026-53586, CVE-2026-53587